weed something/someone out
phrasal verb with weed verb [ I or T ] uk/wiːd/ us/wiːd/
清除;剔除;淘汰
to get rid of unwanted things or people from a group
The first round of interviews only really serves to weed out the very weakest of applicants. 第一轮面试实际上只是要淘汰那些实力最弱的申请者。