Ethanthiol
己二硫醇
🗣️ 情景例句
I'm in charge of the sales department.
我主管销售部。
The mailman is delivering letters.
邮差在发信。
They were still neck and neck! But the other runners were not far behind.
他们仍在肩并肩地跑！但是，其他运动员也距离他们不远。