Thiophanthrene
萘并[2, 3-b]噻吩
🗣️ 情景例句
She doesn't know we've changed hotels.
她不知道我们换了旅馆呀。
Are you in touch with him now?
你现在和他有联系吗？
Yes, I'm afraid I do.I may come later.
是的，恐怕我必须做。我可以晚一点去。