盘点那些个英语四六级考试中常见习语(3)

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　　3. A Drop in the Ocean
        　　这个习语的意思是"a very small amount compared to the amount needed", 相对于所需要的量来说，现有的量根本不够，相当于杯水车薪。
        　　A few thousand pounds is a drop in the ocean when you think about the millions that will be spent on this project. 这个项目要花费上百万，几万块只是杯水车薪。