Drain valve
[化] 放泄閥
?? 醫學釋義
排水閥
?? 詞語組成解析
drain
[dren]
vi. 排水;流干;
vt. 喝光，喝干;使（精力、金錢等）耗盡;使流出;排掉水;
n. 排水;下水道;排水系統;[醫]引流;
valve
[v?lv]
n. 閥;真空管;（管樂器的）活栓;（心臟的）瓣膜;
vt. 裝閥于;以活門調節;
??? 情景例句
The guests are waiting.
客人們正等著呢。
Surely.
肯定是。
The negotiations on the rights and obligations of the parties under contract turned out to be very successful.
就合同保方的權利和義務方面的談判非常成功。