Pin valve
[化] 针(形,孔)阀
🧩 词语组成解析
pin
[pin]
n. 钉;别针，扣针，饰针;大头针;没价值的东西;
vt. 压住;（用钉等）钉住，钉住，别住，扣住;用障壁等)围住，关住（俚语）抓住;[军]牵制;
adj. 针的;钉的;销的;大头针的;
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
we need to put together volunteers
我们需要募集义工
Proverbs are short sentences drawn from long experience.
谚语言短简，得自老经验。
Look at those black clouds. It's going to rain.
看那成堆的乌云，要下雨啦！