Replaceability
更换性, 可代换性, 替换性
🗣️ 情景例句
Let's go.
我们走。
He has a radio,doesn't he?
他有一台收音机，对不对？
He's gone to England with his family. He won't be back until January.
他和家人一起回英国了。要到元月份才回来。