Arithmetic index number
[经] 算术式指数
🧩 词语组成解析
index
['ɪndɛks]
n. 索引;<数>指数;指示;标志;
vt. 给…编索引;把…编入索引;[经济学]按生活指数调整（工资、价格等）;
vi. [机械学]转位;
in(in)+dex(proclaim)→指针；索引；指数；食指；指标
🗣️ 情景例句
Workers have to work very hard to keep bread on the table.
工人得十分努力工作才能赚钱糊口。
I didn't catch that, Could you go over that again?
我没有听清楚，请你再说明一下好吗？
Please sign here to show that you have received the money.
请在这儿签字以表明你已收到这笔钱。"