2025-11-23 16:07:46 浏览次

clearance是什么意思 英[ˈklɪərəns] 美[ˈklɪrəns] n. 清除, 间隙[化] 间隙; 空隙n. the distance by which one thing clears another; the space between themn. permission to proceedclearance的用法...