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Purify vt.使纯净,提纯;使纯洁 Now the water from the sewage system is pass- ing through special mud to be purified,do you believe it? 现在这从下水道里流来的水正通过一种特殊的泥以便净化,你相信有这样的事吗? Rejoice vi.充满喜悦,感到高兴 Many philosophers teach us to rejoice in the simplicity of life rather than the physical pleasure.许多哲学家教导我们要于简单生活而不要追求物质上的享受. Shear vt.剪 n.大剪刀 I wanted to have a new look and all my curls have been shorn off.我想来个新形象,于是满头的卷发都被剪掉了. Believe it or not,but Mrs.Clinton always trims the hedge with a pair of garden shears.信不信由你,克林顿夫人总是亲自手握一把大大的剪刀修理树枝. supersonic a.超声的,超音速的 Nowadays it is hard to find a large civil airliner that is not supersonic.现在要找到一架不是超音速的大型民用客机很难. supervise vt.监督,管理,指导 Most of us know how to do our own work properly,but it is quite another story to supervise others.我们大多数人都知道如何干好自己的工作,但要指导别人又是一回事了. You cant see anyone in this workshop that supervises the work flow?你看不见这个车间有任何管理生产流程的人员吗? | 
