n. 1.(暂时)补缺者；替工；临时填补物。 2.〔美口〕(有关事实的)摘要。 3.在等待时间所作的消遣。 adj. 临时补缺的。
someone who takes the place of another (as when things get dangerous or difficult); "the star had a stand-in for dangerous scenes"; "we need extra employees for summer fill-ins" 同义词：stand-in, substitute, relief, reliever, backup, backup man,
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