zero in (on)

vt. 【不可分性动词短语】1.(常用一般时态)adjust(especially a gun) so it will hit(anexact target location);aim precisely at(someoneor something)调整(尤指枪、炮的瞄准器);瞄准……:The soldier zeroed in a machine gun at 200meters. 士兵把机枪的瞄准器调整到200米的距 ......(本文共 721 字)     [阅读本文]>>



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