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BBC在线收听下载:美国宣布波多黎各进入紧急状态以应对寨卡病毒传播

2016-08-15来源:BBC

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词汇讲解：

1. impose vt.强加; 征税; 以…欺骗
例句：I don't want to impose on you by staying too long.
我不想打扰你,不多耽搁了。

2. obstruct vt. 阻碍; 阻止; 阻塞
例句：It is a crime for the President to obstruct justice.
总统阻挠司法是犯罪。

3. declare vt.申报; 宣布; 声明
例句：Do you think he will declare against the plan?
你认为他会反对这项计划吗？

4. infect vt.使受影响，感染; 传染
例句：One bad boy may infect a whole class.
一个坏学生可能会影响全班。

5. appearance n.外貌，外观; 出现
例句：The new City Hall presents a fine appearance.
新的市政厅呈现出漂亮的外观。