Polyolefin
n. [化]聚烯烃
🗣️ 情景例句
I never expected you would do such a fantastic job.
我从没想过你会做得这么出色！
I read the newspaper over breakfast.
我边吃早饭边看报纸。
In 1953, a former electronics engineer in his fifties, Christopher Cockerell,who had turned to boat-building on the Norfolk Broads,
在1953年，有一位50多岁名叫克里斯托弗·科克雷尔的原电子工程师，改行在诺福克郡的湖泊地区从事造船业，