Indexation system
[经] 指数化制度
🧩 词语组成解析
[经] 指数化
🗣️ 情景例句
Yes, she did.
是的， 她说了。
Did you hear something?
你听到了什么？
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。