VOA慢速英语:Tons Of Methane Gas Could Be Trapped Under Antarctica

1. effective adj. 有效的
例句：Window screens are effective in keeping out mosquitoes.
纱窗能有效地挡住蚊子。

2. describe vt. 描写,描绘
例句：Words cannot describe the beauty of the scene.
语言难以描述那景色之美丽。

3. consider vt. 考虑,细想
例句：I've begun to consider what to do next.
我已在考虑下一步该怎么办。 
 
4. treate vt. 对待;看待
例句：Do not treat this serious matter as a joke.
不要把这件严肃的事情当作笑料。

5. treatment n. 对待;待遇
例句：The prisoners complained of ill treatment by their guards.
囚犯们抱怨看守虐待他们。

6. prevent vt.  防止,预防
例句：Vitamin C is supposed to prevent colds.
维生素C被认为能预防感冒。