wash grains of gold out of the sands—extract the essential from a large mass of material; get small returns for great effort
❍ 本词典的例句是采用～的办法从二百多种书中篦出来的。The examples in this dictionary come from scanning two hundred and more kinds of books by adopting the method of extracting the essential from a large mass of material.
沙里淘金
wash grains of gold out of the sand—extract the essential from a mass of material;get small returns for great effort
沙里淘金shā lǐ táo jīn
从沙子里挑选黄金。比喻非常不易得到或很难得到。get small returns for great effort, extract the essential from a mass of material