Footswitch
脚踏开关
🗣️ 情景例句
first we need to know some references.
首先我们得知道你们有哪些备询人。
I'm afraid that won't be possible,much as we'd like to.
尽管我们很想这样做，但恐怕不行了。
The idea of colonising Mars---- a world 160 times more distant than the Moon----
征服火星的计划-一个比月球远160倍的星球