Optional gear ratio
[化] 可变齿轮速比
🧩 词语组成解析
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;
ratio
['reiʃiəu]
n. 比，比率;比例;系数;
vt. 求出比值，除，使…成比例;将（相片）按比例放大[缩小];
🗣️ 情景例句
I have been talking to a group of salesmen
我一直在与一群推销人员谈话
He who has not tasted bitter knows not what sweet is.
不吃苦中苦，哪知甜中甜。
Is there much of a difference in price?
价钱也有很大的分别吧？