Copolyether
共聚多醚
🗣️ 情景例句
Don't park your car in a dark street.
不要把车停在黑暗的街道上。
I learned grammar this afternoon.
我今天下午学语法。
Ever since, people have had difficulty in deciding whether the craft should be ranged among ships,
自那以后，人们很难决定是否应该将这种运载工具列为轮船、