Polytropism
多变性; 同质多晶型
🗣️ 情景例句
I sure I am glad to see you, Dr. Stewart.
真高兴见到你来 ，Stewart大夫。
He can run as fast as Jim.
他跑的和吉姆一样快。
Then I added with a smile,
我微笑地接着说，