Polytypism
多型性, 多型现象
🗣️ 情景例句
And the telephone number is five five five…three oh nine oh. Thank you.
电话是555-3090。谢谢。
We can dispense with that today but not tomorrow.
今天虽然可以把它免除，但是明天可就不行了。
I think it's closed.
我想已经关门了吧。