Polybromocarbon
多溴烃
🗣️ 情景例句
I am sure. So, we'll be expecting the first shipment in less than a month.
那当然。我们都希望第一批货在一个月之内可以装船。
Where is the ticket office?
售票处在哪儿？
I'm afraid all these offices are non-smoking offices.
恐怕这些办公室都是禁烟办公室。