Dithiodimorpholine
[化] 二硫基二吗啉
🗣️ 情景例句
Hello, Susan.
喂 Susan。
How many provinces do you have?
你们有多少个区？
And anyone who gave more than a passing thought to the bottom confines of the oceans probably assumed that the sea bed was flat.
凡是稍稍想过大海海底的人大概都会认为海底是平坦的。