Valve motion
[机] 阀动机构
🧩 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;
motion
['məuʃən]
n. 运动;手势;动机，意向;请求;
vt. 打手势;向某人点头或摇头示意;打手势要求[指示];
vi. 运动;打手势;
🗣️ 情景例句
It's next week from this Monday.
下个星期一。
I'm going to show him how to speak English.
我正要指点他如何讲英语。
Work on it had begun before my sister left.
这栋房子在我姐姐离开之前就已动工了，