Polybromocarbon
多溴烃
🗣️ 情景例句
before Michelle and her friends arrived.
在Michelle和她的朋友们来之前。
How many cans are you going to take?
你要拿几罐？
At the station, he was told by a smiling policeman that his bicycle had been found.
在警察局里，一位面带笑容的警察告诉他，他的自行车找到了。