Naphthothiazines
三氮杂蒽
🗣️ 情景例句
she'll help me find another dog.
她会帮我另外找一只狗。
Thank you. It was very kind of you.
谢谢，您太好了。
As it is only six feet across, it is barely noticeable.
仅6英尺宽，很难被发现。