Undervulcanization
欠硫化
🗣️ 情景例句
The work is not as difficult as you think.
工作不像你想象的那么难。
Hmm, I love the perfume.
哼，我很喜欢香水。
How about feed-back from your retailers and consumers?
你们的零售商和消费者的反映怎样？