Nitrolamine
硝脑胺
🗣️ 情景例句
We have four people in the family, my parents, my elder brother and I.
我家有 4 口人，我的父母，我的哥哥和我。
Who is the girl?
那女孩是谁？
His talk covered many subjects.
他的报告涉及很多课题。