lack n.缺乏,无,不足vt.缺乏,...lack of maturity 未成年...lack-in-office n.求官职的人...lack system in one's work 工作缺乏条理...lack of penetration 未焊透...lack of evidence 缺乏证据,证据不足...there is a lack of 缺少,没有...notice of lack of conformity 货物不符通知...for lack of 因缺乏...supply the lack 补缺...have no lack of 不缺乏...
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