wear down [wɛə daun]

以下由轻松背单词网站提供

磨损，损耗；使疲劳

His heels always wear down on the outside first. 他的鞋跟总是先从外侧磨损。
The engine parts will wear down if not properly cared for.若未妥善照料，引擎的部分将会被磨损。