正文

VOA慢速英语:Amazon's Tool for Reading, One Word at a Time

2015-09-24来源:VOA

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词汇讲解：

1. increase vt.增加，增大
例句：He had the audacity to ask for an increase in salary.
他竟然厚着脸皮要求增加薪水。

2. retain vt.保持; 留在心中，记住
例句：Concentrated study will help you to retain knowledge.
专心学习有助于你记住知识。

3. complicate vt.使复杂化; 使错综
例句：That would complicate matters.
那会使事情弄得更麻烦的。

4. available adj.可获得的; 有空的; 可购得的
例句：Chinese commodities available for export are varied.
中国可供出口的商品种类繁多。

5. useful adj.有用的，有益的
例句：These idioms are less popular but can be very useful.
这样的习惯用法并不太多见，但是可能会很有用。