Undervulcanization
欠硫化
🗣️ 情景例句
How many words can you type per minute?
你一分钟能打多少字？
I can give you quarters, if that'll help.
如果2角5分的硬币管用的话，我可以给你换一些。
Last year was a bad year for the company. There was a big fall in sales.
去年公司不景气。销售额骤减。