Hno
次硝酸
🗣️ 情景例句
Oh, I'm so sorry.
噢， 我真难过。
He failed the examination but he didn't seem to care.
他考试不及格却似乎并不在乎。
As soon as this was done, they cooked a meal over an open fire.
这件事刚刚做完，他们就在篝火上烧起了饭。