Undervulcanization
欠硫化
🗣️ 情景例句
That's a very interesting question.
这是个非常有趣的问题。
I have a lot of trouble with pronunciation.
我有发音的很多毛病。
a ticklish business which is achieved with the aid of two tame elephants roped to the captive on either side.
这是一件棘手的事，需要在它两侧拴上两头驯服的大象才能完成。