Index upgrade
[计] 索引改进
🧩 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
upgrade
[,ʌp'ɡred]
n. 向上的斜坡;
vt. 提升;使（机器、计算机系统等）升级;提高（设施、服务等的）档次;提高（飞机乘客、旅馆住客等）的待遇;
up向上+grade步，级→向上升级→上升，升级
🗣️ 情景例句
How many words can you type per minute?
你一分钟能打多少字？
Don't forget to put stamps on your letter.
别忘了贴邮票。
It was only possible for the Ombudsman to find this out by sending one of his representatives to check the facts.
司法特派员只有派他的代表去核对事实才能了解真相。