Dach
[医][=diamino-cyclohexane]二氨基环己烷
🗣️ 情景例句
My younger brother, Robbie.
这是我弟弟Robbie
Old wood is best to burn,old book to read.
老柴好烧，老书宜读。
By January 10th, I was back to where I had started from.
到了1月10日，我恢复了原来的作息时间。