Boundary reflection
[计] 边界反射
🧩 词语组成解析
🗣️ 情景例句
No thanks. Maybe some other time.
不用了，谢谢。也许下次吧。
I must be off soon.
我很快就得走了。
tap water that is too hot to touch can be left to cool and is generally safe to drink.
水管中流出的烫手的水可以留下来冷却。这种水一般是安全的。