Footswitch
脚踏开关
🗣️ 情景例句
Fast asleep.
正熟睡着呢。
I'm gonging to show him how to play bridge.
我正要指点他如何打桥牌。
Were you in San Francisco at the time of the big earthquake in 1989?
1989年旧金山大地震时，你在那儿吗？