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
She likes you.
她喜欢你 。
She's meeting me at the Libe at seven.
她约好七点跟我在图书馆见面。
Mr. Smith knew Jack didn't look at the others because he was nervous.
史密斯先生知道杰克不敢看别人是因为紧张。