Thiophanthrene
萘并[2, 3-b]噻吩
🗣️ 情景例句
What made you decide to study Economics?
你为什么决定修读经济学？
Lightly gain,quickly lost.
来得容易去得快；不义之财，理无久享。
They look around ,but Li Mei did not wait for their thanks.
他们看看周围--但刘梅没有等他们感谢就走了。