weed out

基本解释

We must weed out the yellow flowers among the onions as soon as possible.
我們必須盡快除去洋蔥地裡的黃花草。
Heywood admits that there may be pitfalls—the prospect, for example, that employers could weed out workers with rare diseases.
海伍德承認可能存在缺陷——例如，可以預見，雇主會把患有罕見疾病的員工清除出去。
Nurture and reward the top 20％ of your staff who produce 80％ of the results, and actively weed out the bottom 10％ who give you 80％ of the headaches.
培養和獎勵公司中20％最優秀的、可爲公司産生80％傚益的員工，而把那最差勁的10％卻帶給你80％頭痛的員工清除出去。

It says it has detained the refugees because it wants to screen them to weed out former rebels, and to demine villages where battles had raged.
We're not using them to weed you out, we're using them to help you learn.
我們不會用他們來淘汰你們，而是用他們來幫助你們學習。
麻省理工公開課 - 計算機科學及編程導論課程節選

So there has to be a process to weed out the good and the bad.
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"This was one of their safety valves to weed out police calls, " says Jerry.
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If you weed out things or people that are useless or unwanted in a group, you find them and get rid of them.