Copolymers
n. [高分子] 共聚物（copolymer的复数）
🗣️ 情景例句
and cheese sandwiches for lunch.
和起士三明治当午餐。
How well do you know French?
你法语好吗？
He was rather elderly with grey hair and clear blue eyes.
他上了年纪，有着灰白的头发和明亮的蓝眼睛。