Dipolymerization
[化] 二元共聚; 二元共聚作用
??? 情景例句
A community center
一個社區中心
I eat dinner at about 7 o'clock.
我在大約7點鐘吃晚飯。
Now she looks pale as if she were ill.
現在她臉色難看，好像病了一樣。