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 (機動車齒輪箱中的)同步齒輪系.
??? 情景例句
I work with families every day, Ellen.
我每天的工作就是接觸一些家庭, Ellen。
The coach is always gloomy when the team loses a game.