VOA慢速英语:Words and Their Stories: Number One

2. joke n. 无需认真对待的事情;轻松的事;容易的事
例句：Being cold and hungry is no joke.
饥寒交迫可不是闹着玩的。

3. concerned adj. 担心的, 烦恼的, 忧虑的
例句：Naturally we were concerned for him when we heard of the accident.
当我们听到那意外事件时, 自然地为他担忧。

4. recognize vt. 察觉；意识到
例句：He has not recognized the seriousness of the present situation.
他还没有意识到目前形势的严重。

5. alcohol n. 酒, 含酒精的饮料
例句：The law forbids shops to sell alcohol to minors.
法律禁止商店向未成年者出售含酒精的饮料。

6. thoughtful adj. 体贴的, 关心的, 关切的, 周到的
例句：She is thoughtful for her friends.
她很体贴她的朋友们。

7. quality n. 品质, 特征, 特性
例句：Decision is a quality requisite to a commander.
决断是指挥员必须具备的品质。

8. deserve vt.应受, 应得, 值得
例句：He deserves a reward for his efforts.
他积极努力, 值得奖赏。

9. regrettable adj. 令人遗憾的;使人懊悔的
例句：His tiredness caused him to make a regrettable error.
他由于疲劳而犯了个令人遗憾的错误。

10. square vt. 一致,相符
例句：His views on the question do not square with mine.
他对这个问题的看法跟我的不一致。