Condensed polymer
[化] 缩聚物; 缩合聚合物
🧩 词语组成解析
a. 浓缩的；扼要的
🗣️ 情景例句
He's writing to invite me
他写信邀请我
Sorrow comes unsent for.
悲哀来时不须邀。
From 1830 onwards in the USA and from about 1870 in Canada, settlers began to move westwards and to take possession of the plains as their own.
美国自1830年起，加拿大从1870年左右起，殖民者开始向西迁移，并把平原据为己有。