Hno
次硝酸
🗣️ 情景例句
Oh, thanks. I'll be there. Where will it be?
哦，谢谢，我一定出席。在哪里举行。
The mother's heart is the child's schoolroom.
母亲的心肠是孩子的课堂。
I was doing eighty when I overtook you.
我是以第小时80英里的速度赶上你的。