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1. infection n. 传染;侵染
例句：Are you sure there is no danger of infection now?
你敢不敢肯定现在已经没有传染的危险了?

2. painful adj. 疼痛的;引起痛苦的
例句：My back is so painful that I cannot stand upright anymore.
我的背疼痛难忍,我现在甚至站不直了。

3. standoff n. 僵局
例句：Indonesia's political standoff was resolved when Wahid was replaced as president. 
瓦希德就任总统使印度尼西亚政治陷入僵局。

4. release vt. 释放,解放
例句：Release the dog. He has been chained up for hours.
放开这条狗。它已被拴了好几小时了。

5. detain vt. 留住;使耽搁
例句：Allow me to detain you for a moment.
请允许我耽搁你一会儿。

6. suspect vt. 疑有,察觉
例句：The tiger suspected danger and ran away.
老虎意识到危险便逃跑了。

7. issue vt. 发行;发布
例句：The post office issued the stamps last week.
上星期邮局发行了这些邮票。

8. improve vt. 改进,改善;增进
例句：He put forward a plan for improving the rate of production.
他提出了一个提高生产率的计划。