Polytypism
多型性, 多型现象
🗣️ 情景例句
OK.
好的。
He has been working in advertising for ten years, but now he is teaching.
他曾经在广告公司服务十年，但现在在当老师。
Get him his change! It's easy to say, sir; but look at the bill yourself.
给他找钱！先生，说的倒轻巧，您自己来看看这张票子吧。