Cavitary
腔的, 空洞的
🗣️ 情景例句
You've got lots of time to improve your English.
你已经花了好多时间去提高你的英语水平。
Fill it up with unleaded and check the oil,please.
请加满不含铅的汽油，并检查一下机油。
I'm sorry, but I have to cancel out luncheon appointment.
真抱歉，不过我不得不取消我们午餐的约会。