Pyrazinodiisoindole
吡嗪并二异吲哚
🗣️ 情景例句
People who don't smoke think that cigarettes stink.
不吸烟的人认为烟的味道很差。
That house is for sale. It has central heating.
此房出售，房子里有供暖设备。
CUSTOMS OFFICER: Are you tourists?
你们是来旅游的吗？