Hexamethylenediamine
[建] 己二氨-[1,6]
🗣️ 情景例句
Still waters run deep.
冰冻三尺非一日之寒。
He must have been an outstanding student.
他一定是个优秀学生。
Annie was born in a poor family, on April 4th, 1866.
1866年4月4日，安妮出生在一个贫苦家庭中。