Elastoprene
二烯橡胶
🗣️ 情景例句
do you need any help?
需要帮忙吗？
The farmers are the founders of civilization and prosperity.
农民是文化和繁荣的奠基者。
Yes. It's very different from Australia at this time of year.
对。这个时节这儿的天气与澳大利亚的大不相同。