Alternativeness
两者择一
🗣️ 情景例句
autograph copies for the guests at the opening?
在展览开幕时为客人在书上亲笔签名呢
What's done by night appears by day.
若要人不知，除非己莫为。
But if you go to the eastern provinces, or go to some country areas.
但是如果你到东部的一些省或到乡下的一些地区去的话。