He is keen to weed out the many applicants he believes may be frauds. [VERB PREP. noun]

他急于剔除那些他认为是冒牌货的申请人。

A small group of neo-Nazis have infiltrated the ranks. We must weed them out as soon as possible. [VERB noun PREP.]

队伍中混入了一小撮新纳粹分子，我们必须尽快将其清除。