Isopropenyl
异丙烯基
🗣️ 情景例句
Thank you. Would you like something to drink? A cup of coffee?
谢谢。你想喝点儿什么？来杯咖啡吗？
What day is today?
今天星期几？
Is this shirt Tim's?
这件衬衫是蒂姆的吗？