Chapter IV.

Of Clouds, Rain, Snow, and Hail.

Anaximenes thinks that the air by being very much condensed clouds are formed; this air being more compacted, rain is compressed through it; when water in its falling down freezeth, then snow is generated; when it is encompassed¹ with a moist air, it is hail. Metrodorus, that a cloud is composed of a watery² exhalation carried into a higher place. Epicurus, that they are made of vapors³; and that hail and snow are formed in a round figure, being in their long descent pressed upon by the circumambient air.

1 encompassed   

v.围绕( encompass的过去式和过去分词 )；包围；包含；包括

参考例句：

• The enemy encompassed the city. 敌人包围了城市。 来自《简明英汉词典》
• I have encompassed him with every protection. 我已经把他保护得严严实实。 来自英汉文学 - 双城记

2 watery   

adj.有水的，水汪汪的；湿的，湿润的

参考例句：

• In his watery eyes there is an expression of distrust.他那含泪的眼睛流露出惊惶失措的神情。
• Her eyes became watery because of the smoke.因为烟熏，她的双眼变得泪汪汪的。

3 vapors   

n.水汽，水蒸气，无实质之物( vapor的名词复数 )；自夸者；幻想 [药]吸入剂 [古]忧郁（症）v.自夸，（使）蒸发( vapor的第三人称单数 )

参考例句：

• His emotions became vague and shifted about like vapors. 他的心情则如同一团雾气，变幻无常，捉摸不定。 来自辞典例句
• They have hysterics, they weep, they have the vapors. 他们歇斯底里，他们哭泣，他们精神忧郁。 来自辞典例句