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过筛子

ɡuò shāi zi
  • sift out;carefully select
过筛子过筛子
  1. 先把该解决的问题过筛子。

    Let 's first go over those matters which must be resolved .

  2. 没有过筛子的沙子是不能入料的。

    Sand can not be added into the material without being sieved .