B
生物医药大词典
by MedSci
菜单
词典
分类
百科
诗词
背单词
英文名
DeepEvidence ↗
确认登录状态…
例句 /
Ensure that the grille is in place while the machinery is in operation.
Ensure that the grille is in place while the machinery is in operation.
机器运转时一定要放好安全网罩.