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重点讲解：
1.chuckle to 窃喜，偷偷笑
例句：It brings chuckle to myself
它带给我的是窃喜
2.make a discovery of 发现
例句：To make a discovery more likely soon, another round of licensing will take place in 2010.
为了更快的取得发现，另外一轮的开采牌照将会在2010年发放。
3.trickle down 涓滴；涓滴效应；向下滴流
例句：These droplets trickle down the inner wall into a circular trough at the inner base of the cone.
这些液滴在内璧滴下进入圆锥体底部的圆形槽内。
4.mark my words 记住我的话；听我说；我担保
例句：Mark my words, you'll regret this later on.
记住我的话，你以后对这件事会后悔的。
5.the old hound is the best 姜还是老的辣
例句：You may be very smart and clever, but the old hound is the best, when all is said and done."
你也许是非常聪明能干的，但归根结底，生姜还是老的辣。"
