Valve gear
[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;
gear
[ɡɪr]
n. 齿轮;排挡;传动装置;衣服 ;
vi. 接上;调和;
vt. 使适应;装上齿轮;用齿轮连接;
🗣️ 情景例句
You really must have your wits about your when dealing with such people.
跟这类人打交道，你必须格外警觉。
A story can be created with these characters.
从这些人物可以创造出一篇故事。
When everyone had taken his/her place, the lawyer spoke as follows.
当大家都入座以后，律师作了如下的发言