Polytypism
多型性, 多型现象
🗣️ 情景例句
You won't believe this.
你会觉得难以置信。
I have no secret of success but hard work.
成功无秘诀，只是努力干。
'I might as well have them,' I said sadly.
“我还是买下的好，”我垂头丧气地说。