慢速英语:Fewer Children Under the Age of Five are Dying

音频下载[点击右键另存为]

同步字幕下载[点击右键另存为]

1. challenge vt. 向...挑战
例句：I challenged him to show his proof.
我要他拿出证据。

2. occur vi. 发生
例句：Earthquakes occur frequently in this area.
这一地区经常发生地震

3. decline vi. 下降,下跌;减少
例句：As one grows older one's memory declines.
人的记忆力随着年龄增长而衰退。

4. double adj. 两倍的;加倍的
例句：I'll give you double pay for working overtime.
你加班我付你双倍工钱。

5. survival n. 幸存者;残存物
例句：The old man is a survival of the past age.
这老人乃上一个时代的遗老。

6. solve vt. 解决;解释;阐明
例句：With the help of his friends, he finally solved the problem.
在朋友们的帮助下,他终于解决了问题。