Diazetidine
[化] 二氮环丁烷; 二氮杂环丁烷
🗣️ 情景例句
You would be well-advised to book in advance.
你还是提前预订较为稳妥。
After forty years teaching English he thinks it's time to call it a day.
他教英语四十年，认为该退休了。
She's a new student. She's American.
她是个新来的同学，是个美国人。