gear
US /ɡɪr/
UK /ɡɪr/

名词
1.
2.
齿轮, 档位
a toothed wheel that engages with another toothed mechanism to change the speed or direction of transmitted motion
示例:
•
The car's transmission uses several gears to control speed.
汽车的变速箱使用多个齿轮来控制速度。
•
He shifted into a higher gear to accelerate.
他换到更高的档位以加速。
动词
在 Lingoland 学习这个单词