Ifelse
如果…否则
🗣️ 情景例句
I've seen a lot of people wearing runners lately. I guess they're back in fashion.
最近我看到很多人穿上了披肩，我看是不是披肩又流行起来了？
Know something of everything and everything of something.
既要有一般常识，又要有专业知识。
It took a very long time to carve a page for a book.
刻一页书要花费的时间太长。