Servobrake
伺服[继动]制动器, 伺服[助力]刹车
🗣️ 情景例句
She is giving me piano lessons in exchange for her English classes.
我教她英语，她教我弹钢琴。
It only takes a few minutes.
只要几分钟而已。
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。