Nitronate
氮酸酯
🗣️ 情景例句
going to the children's ward once or twice a week
每星期就去小儿科病房一、两次
He is indifferent to any and everything.
他对任何事都漠不关心。
Yes, I do. But it's only a small one.
是的，有，但是很小。