Polyoxybutylene
[化] 聚氧化亚丁基
🗣️ 情景例句
Is that all for customs formalities?
海关检查就这些了吗？
Let's ask Mr. Jiang to answer that.
那件事我让蒋先生来答复。
My brother has never been abroad before, so he is fending this trip very exciting.
我弟弟以前从未出过国，因此，他觉得这次旅行非常激动人心。