CHAPTER VII.

 Navigation of the Tigres.

Alexander now ordered Hephaestion to lead the main body of the infantry¹ as far as the Persian Sea, while he himself, his fleet having sailed up into the land of Susiana, embarked² with the shield-bearing guards and the body-guard of infantry; and having also put on board a few of the cavalry³ Companions, he sailed down the river Eulaeus to the sea.855 When he was near the 380place where the river discharges itself into the deep, he left there most of his ships, including those which were in need of repair, and with those especially adapted for fast sailing he coasted along out of the river Eulaeus through the sea to the mouth of the Tigres. The rest of the ships were conveyed down the Eulaeus as far as the canal which has been cut from the Tigres into the Eulaeus, and by this means they were brought into the Tigres. Of the rivers Euphrates and Tigres which enclose Syria between them, whence also its name is called by the natives Mesopotamia,856 the Tigres flows in a much lower channel than the Euphrates, from which it receives many canals; and after taking up many tributaries⁴ and its waters being swelled⁵ by them, it falls into the Persian Sea.857 It is a large river and can be crossed on foot nowhere as far as its mouth,858 inasmuch as none of its water is used up by irrigation of the country. For the land through which it flows is more elevated than its water, and it is not drawn⁶ off into canals or into another river, but rather receives them into itself. It is nowhere possible to irrigate⁷ the land from it. But the Euphrates flows in an elevated channel, and is everywhere on a level with the land through which it passes. Many canals have been made from it, some of which are always kept flowing, and from which the inhabitants on both banks supply themselves with water; others the people make only when requisite⁸ to irrigate the land, when they are in need of water from drought.859 For this country is usually free from rain. The consequence is, that the 381Euphrates at last has only a small volume of water, which disappears into a marsh⁹. Alexander sailed over the sea round the shore of the Persian Gulf¹⁰ lying between the rivers Eulaeus and Tigres; and thence he sailed up the latter river as far as the camp where Hephaestion had settled with all his forces. Thence he sailed again to Opis, a city situated¹¹ on that river.860 In his voyage up he destroyed the weirs¹² which existed in the river, and thus made the stream quite level. These weirs had been constructed by the Persians, to prevent any enemy having a superior naval¹³ force from sailing up from the sea into their country. The Persians had had recourse to these contrivances because they were not a nautical¹⁴ people; and thus by making an unbroken succession of weirs they had rendered the voyage up the Tigres a matter of impossibility. But Alexander said that such devices were unbecoming to men who are victorious¹⁵ in battle; and therefore he considered this means of safety unsuitable for him; and by easily demolishing¹⁶ the laborious¹⁷ work of the Persians, he proved in fact that what they thought a protection was unworthy of the name.

1 infantry   

n.[总称]步兵(部队)

参考例句：

• The infantry were equipped with flame throwers.步兵都装备有喷火器。
• We have less infantry than the enemy.我们的步兵比敌人少。

2 embarked   

乘船( embark的过去式和过去分词 )； 装载； 从事

参考例句：

• We stood on the pier and watched as they embarked. 我们站在突码头上目送他们登船。
• She embarked on a discourse about the town's origins. 她开始讲本市的起源。

3 cavalry   

n.骑兵；轻装甲部队

参考例句：

• We were taken in flank by a troop of cavalry. 我们翼侧受到一队骑兵的袭击。
• The enemy cavalry rode our men down. 敌人的骑兵撞倒了我们的人。

4 tributaries   

n. 支流

参考例句：

• In such areas small tributaries or gullies will not show. 在这些地区，小的支流和冲沟显示不出来。
• These tributaries are subsequent streams which erode strike valley. 这些支流系即为蚀出走向谷的次生河。

5 swelled   

增强( swell的过去式和过去分词 )； 肿胀； （使）凸出； 充满（激情）

参考例句：

• The infection swelled his hand. 由于感染，他的手肿了起来。
• After the heavy rain the river swelled. 大雨过后，河水猛涨。

6 drawn   

v.拖，拉，拔出；adj.憔悴的，紧张的

参考例句：

• All the characters in the story are drawn from life.故事中的所有人物都取材于生活。
• Her gaze was drawn irresistibly to the scene outside.她的目光禁不住被外面的风景所吸引。

7 irrigate   

vt.灌溉，修水利，冲洗伤口，使潮湿

参考例句：

• The farmer dug several trenches to irrigate the rice fields.这个农民挖了好几条沟以灌溉稻田。
• They have built canals to irrigate the desert.他们建造成水渠以灌溉沙漠。

8 requisite   

adj.需要的，必不可少的；n.必需品

参考例句：

• He hasn't got the requisite qualifications for the job.他不具备这工作所需的资格。
• Food and air are requisite for life.食物和空气是生命的必需品。

9 marsh   

n.沼泽，湿地

参考例句：

• There are a lot of frogs in the marsh.沼泽里有许多青蛙。
• I made my way slowly out of the marsh.我缓慢地走出这片沼泽地。

10 gulf   

n.海湾；深渊，鸿沟；分歧，隔阂

参考例句：

• The gulf between the two leaders cannot be bridged.两位领导人之间的鸿沟难以跨越。
• There is a gulf between the two cities.这两座城市间有个海湾。

11 situated   

adj.坐落在...的，处于某种境地的

参考例句：

• The village is situated at the margin of a forest.村子位于森林的边缘。
• She is awkwardly situated.她的处境困难。

12 weirs   

n.堰，鱼梁（指拦截游鱼的枝条篱）( weir的名词复数 )

参考例句：

• They shot some pretty weirs and rapids. 他们看到了一些美丽的堰坎和湍滩。 来自辞典例句
• She bid me take life easy, as the grass grows the weirs. 她让我简单的去生活，就像地上长出青草。 来自互联网

13 naval   

adj.海军的，军舰的，船的

参考例句：

• He took part in a great naval battle.他参加了一次大海战。
• The harbour is an important naval base.该港是一个重要的海军基地。

14 nautical   

adj.海上的，航海的，船员的

参考例句：

• A nautical mile is 1,852 meters.一海里等于1852米。
• It is 206 nautical miles from our present location.距离我们现在的位置有206海里。

15 victorious   

adj.胜利的，得胜的

参考例句：

• We are certain to be victorious.我们定会胜利。
• The victorious army returned in triumph.获胜的部队凯旋而归。

16 demolishing   

v.摧毁( demolish的现在分词 )；推翻；拆毁（尤指大建筑物）；吃光

参考例句：

• The machine was designed specially for demolishing old buildings. 这种机器是专为拆毁旧楼房而设计的。 来自《用法词典》
• Conventional demolishing work would have caused considerable interruptions in traffic. 如果采用一般的拆除方法就要引起交通的严重中断。 来自辞典例句

17 laborious   

adj.吃力的，努力的，不流畅

参考例句：

• They had the laborious task of cutting down the huge tree.他们接受了伐大树的艰苦工作。
• Ants and bees are laborious insects.蚂蚁与蜜蜂是勤劳的昆虫。