Performed polymer
[化] 预聚体
🧩 词语组成解析
v. 执行, 表演（perform的过去分词形式）
🗣️ 情景例句
she's still alone, without her family.
她仍是孤单单的，找不到家。
That deep sigh could only express Helen's sadness.
那深深的叹息，不外乎表示出海伦的悲哀。
I used to travel by air a great deal when I was a boy.
我在幼年的时候，曾多次乘飞机旅行。