Nitrato
硝酸基
🗣️ 情景例句
How much do I owe you?
我应付你多少钱？
The mother's heart is the child's schoolroom.
母亲的心肠是孩子的课堂。
Not at all! Please sit down, Mr. Green. Would you like a cup of tea?
没关系！请坐，格林先生。你喝茶吗？