Contravalid
反有效的, 无效的
🗣️ 情景例句
While my car is in the shop, they have given me a courtesy car to drive around.
我的车还在修理店时，他们给我一辆替代车用。
Grocery bills are expensive.
食品价格昂贵。
OK, Mum. I'll get it.
好的，妈妈。我来接。