Overacidity
酸度超过
🗣️ 情景例句
Thanks for hearing me out. And ...
谢谢你听我的意见， 而且……
There's no such thing as a free lunch.
天下没有白吃的午餐。
It's a very old castle. It is the oldest one in Britain.
这个城堡很古老，它是英国最老的了。