Valve cock
[化] 阀栓
🧩 词语组成解析
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;
cock
[kɔk]
n. 公鸡;成熟雄鸟;首领，领导;龙头;
vt. 使某物竖起;使某物倾斜;使朝上;扳上扳机;
vi. 翘起，竖起;大摇大摆;
🗣️ 情景例句
A great-grandchild. A great-grandson.
一个曾孙。 一个曾孙。
I'm always confused with s and th.
我常把s和th搞混。
I want to take some books to the classroom. Could you help me, please?
我想把一些书拿到教室里，你能帮个忙吗？