🧩 词语组成解析
[化] 二硝基乙胺
费伯（人名）
🗣️ 情景例句
He doesn't take me seriously.
他对我没有诚意。
When was the last time he wrote you ?
他给你写最后一次是什么时候？
The six students put their closed hands in front of them.
6个学生将握紧的手放在前面。