weed out

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英文解釋：

動詞 weed out:

1. remove unwanted elements
   同義詞：comb out

英文造句：

1. The new conductor start by weed out the weaker player in the orchestra.
   管弦樂隊新來的指揮一上任就先把較差的演奏人員清除出去了。
2. He weed out one by one the book he do not want.
   他把不想要的書一本一本丟掉。