Undervulcanization
欠硫化
🗣️ 情景例句
They are a right match.
他们是天生的一对。
If she gets mad with him, she will not speak to him for days.
她对他一生气就会许多天不跟他说话。
Er, this is Lucy, and er, this is Lily.
这个是露茜，这个是莉莉。