“把音量调高”的英文：turn up the volume
“把音量调低”的英文：turn down the volume
volume：
n.体积；量；卷；容积；音量；容量；成交量.
体积；容积；容量the amount of space that an object or a substance fills; the amount of space that a container has.
量；额the amount of sth.
音量；响度the amount of sound that is produced by a television, radio, etc.
（成套书籍中的）一卷，一册a book, that is part of a series of books.
书a book.
卷，合订本（同一杂志的一系列期刊，尤指一年的）a series of different issues of the same magazine, especially all the issues for one year.
例句：I would appreciate it a lot if you could turn down the volume.
如果你将音量关小，我将十分感激。
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