Contravalency
共价
🗣️ 情景例句
The security guard asked the stranger for some I.D.
保安要求陌生人出示身份证。
We talked about a lot of things.
我们谈论了很多事情。
The comparable speed from the Moon is only 1.5 miles per second.
而从月球出发的相应速度只是每秒1。5英里。