VOA慢速英语:Med Students Learn Medical English in Cuba

1.prevent vt.预防; 阻止
例句：He has determined that nothing will prevent him.
他已决心不顾一切阻碍。

2. return vt.回转，返回
例句：Bill sees you return home during the evening party end.
比尔晚会结束时看见你回家。

3. practice vi.  练习; 实习; 实行
例句：I have had much practice in transcription.
我在抄写方面有过很多锻炼。

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. require vt.需要; 要求
例句：sometimes require a more sovereign stance.
有时是需要独占姿态的。