zinc
zincn.1. 【化】锌UZinc can be used to cover other metals to stop them rusting.锌可用来涂在其他金属表面
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zero in on1. 向...集中注意力;对准They zeroed in on the suspicious man.他们的注意力集中在那个可疑分子
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zenithn.1. 【天】天顶the Szenith telescope天顶仪It felt as if we had traveled from nadir to zenith.感
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