词汇讲解：
1. recession n. 经济衰退; 不景气；经济萎缩
例句：The recession bankrupt my father.
经济衰退使我的父亲破产了。
2. unemployment n. 失业；失业(人数), 失业率
例句：Unemployment among married women reached a peak.
在已婚女性中失业率达到了峰值。
3. proficiency n. 熟练, 精通
例句：His proficiency as a surgeon is well known.
他作为一名外科医生的水平是有名的。
4. dub vt. 配音; 复制
例句：The film is dubbed.
这部影片是配音的。
5. channel n. 频道,波段
例句：There are at present three television channels.
目前有三个电
视频道。
6. realize vt. 了解; 认识到; 理解; 领会; 意识到
例句：If you were in the Sahara, you would realize the value of fresh water.
如果你在撒哈拉大沙漠, 你就会知道淡水的价值了。
7. necessity n. 必要(性); (迫切)需要
例句：You must understand the necessity of education.
你必须懂得教育的必要性。
8. indeed adv. 的确, 确实; 甚至, 其实
例句：The possibility of rescue now seemed remote indeed.
救援的可能性的确很小。
9. bilingual adj. 两种语言的;能说两种语言的
例句：He is virtually bilingual in Spanish and Portuguese.
他实际上讲西班牙语和葡萄牙语两种语言。
10. mandatory adj. 命令的;强制的;义务的
例句：Is the appointment of worker-directors to be mandatory?
工人董事的任命是不是强制性的？
11. spread v. 撒;散布,传播;普及
例句：She was told not to spread this secret around.
她被告知不要把这个秘密传出去。
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