Polyurea
[化] 聚脲
🗣️ 情景例句
The newspapers don't come out till about ten o'clock.
报纸要差不多十点钟才出来。
Archeologists still can only surmise as to the origin of Man.
考古学家们对于人类的起源依然无法推测。
At the age of eight, he joined a group of child dancers.
8岁时参加了儿童舞蹈团。