Why Bats Fly at Night.

 Narrator, Francisco M. Africa.

 

Many years ago the earth was inhabited by only one man. His body was composed of minute organisms that were incessantly¹ warring against one another. One day this man became so weak that he could not obtain food for his support. He laid himself down on some soft moss² by the bank of a river, and there he remained till night.

 

The organisms that lived in his body began to fight against one another most fiercely. Each ate his fellow until he became very big. At last the man died, and only one organism remained alive. This organism then flew away, and became the ancestor of the bats. The light of day so dazzled his eyes, that he could not fly very far, so he decided³ to fly only at night. And ever since, his descendants, too, have hidden themselves in the day-time, and come out only when it is dark.

1 incessantly   

ad.不停地

参考例句：

• The machines roar incessantly during the hours of daylight. 机器在白天隆隆地响个不停。
• It rained incessantly for the whole two weeks. 雨不间断地下了整整两个星期。

2 moss   

n.苔，藓，地衣

参考例句：

• Moss grows on a rock.苔藓生在石头上。
• He was found asleep on a pillow of leaves and moss.有人看见他枕着树叶和苔藓睡着了。

3 decided   

adj.决定了的，坚决的；明显的，明确的

参考例句：

• This gave them a decided advantage over their opponents.这使他们比对手具有明显的优势。
• There is a decided difference between British and Chinese way of greeting.英国人和中国人打招呼的方式有很明显的区别。