英语词汇“water key”是什么意思，“water key”的读音、用法及例句翻译-乐坝网

词汇	water key
释义	water keyn.（名词） A lever covering a small hole on certain brass instruments, such as the trombone, that is pressed to drain saliva that has accumulated in the instrument.乐器排水口：盖住诸如长号等某些铜管乐器上小孔的杆状物，可以压下，以排出乐器中积下的口水
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