Hand valve
[化] 手动阀门
🧩 词语组成解析
hand
[hænd]
n. 手;协助，帮助;（工具等的）把，柄;掌管;
vt. 传递，交给;搀扶;支持;
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
You had something on your mind
你显然有话要说
An empty purse frightens many friends.
曩中无分文，亲友不上门。
and that their rims are clean and dry.
瓶口清洁干燥。