synchromesh
n[U]
device in a vehicle's gearbox that makes the parts turn at the same speed and thus allows gears to be changed smoothly (机动车齿轮箱中的)同步齿轮系.
🗣️ 情景例句
I would like a Coca.
我要可乐。
One crowded hour of glorious life is worth an age without a name.