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BBC在线收听下载:美国联邦卫生机构应对埃博拉的爆发

2014-08-08来源:BBC

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词汇讲解：

1. withdraw vt.撤走; 拿走
例句：He withdrew his support for the plan.
他撤消对这个计划的支持。

2. negotiate vi.谈判，协商
例句：Fleeting efforts to negotiate have failed.
谈判的努力随即宣告失败。

3. instance n.例子，实例
例句：In the present instance, you are quite astray.
这桩事上你可完全搞错啦！

4. expire vi.期满; 文件、协议等（因到期而）失效
例句：My season ticket will expire this week.
我的月票到这周为止。

5. urge vt.催促; 推进
例句：Some americans urge a stronger response.
一些美国人敦促对中国予以更强硬的回应。

6. extend vt. 延伸; 扩大
例句：Mobile-phone firms will extend credit.
移动电话公司将扩大贷款规模。

7. extract vt.提取; （费力地）拔出; 选取
例句：They are also easy to extract from blood.
淋巴细胞也很容易从血液中提取出来。

8. reluctant adj.不情愿的，勉强的
例句：She convinced a reluctant union to agree to a pay-for-performance system.
她说服了一个不情愿的工会接受绩效工资系统。