Drain valve
[化] 放泄阀
🏥 医学释义
排水阀
🧩 词语组成解析
drain
[dren]
vi. 排水;流干;
vt. 喝光，喝干;使（精力、金钱等）耗尽;使流出;排掉水;
n. 排水;下水道;排水系统;[医]引流;
valve
[vælv]
n. 阀;真空管;（管乐器的）活栓;（心脏的）瓣膜;
vt. 装阀于;以活门调节;
🗣️ 情景例句
But I'm sure he has a few bags with him on the train.
不过我相信他在火车上还有几件行李的。
The mountains have brought forth a mouse.
大山生小鼠（指：费力大而收效小）。
Which book?
哪一本？