重点单词：
1、sake
n. 目的；利益；理由；日本米酒
n. (Sake)人名；(罗)萨克；(日)酒(姓)
Let's assume for the sake of argument that we manage to build a satisfactory database.
让我们为了讨论假定我们设法构建了一个令人满意的数据库。
2、fluent
adj. 流畅的，流利的；液态的；畅流的
She studied eight foreign languages but is fluent in only six of them.
她学了8种外语，但流利的只有其中的6种。
3、forbid
vt. 禁止；妨碍，阻止
His own pride forbids him to ask Arthur's help.
他自己的傲慢使他不可能寻求亚瑟的帮助。
4、choosy
adj. 好挑剔的
Skiers should be particularly choosy about the insurance policy they buy.
滑雪者在购买保险的问题上应特别谨慎。
重点短语：
1、turn down
减小，关小，调低
He kept turning the central heating down.
他不断地调低中央暖气系统的温度。
考考你（翻译）：
1、经济变化本身并没有吸引他。
2、他的儿子非常流利的发言受到了表扬。
3、她被关起来不许读书。
答案下期公布：
上期答案：
1、The director deliberated for a long time before giving his decision.
2、An engine has many parts, each performing a different function.
3、Remember to lag the water pipes with some cloth when there is a drop in temperature.