Mitogenicity
丝裂原活性
🗣️ 情景例句
I'm sorry I missed him. I had to work late.
很抱歉我错过了他醒着的时候。我必须工作到很晚。
I played downstairs last night.
我昨晚在楼下玩。
When did they live there?
他们什么时候住在那儿？