Phenoxazine
吩嗪
🗣️ 情景例句
What sort of experience do you have?
你有什么样的经历？
Do not swap horses when crossing a stream.
处在危难中，不宜大更动。
I would like to express to all of you here our sincere welcome.
让我向在座诸位致以最真挚的欢迎。’