Plasmid
[化] 质粒\\n[医] 质体(胞质遗传体)
🗣️ 情景例句
About what?
关于什么
What would you have done last night if you hadn't had to study?
如果昨晚你不必学习你会做什么？
It took a very long time to carve a page for a book.
刻一页书要花费的时间太长。