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
Oh, yes. It's definitely worth reviewing.
噢 是的 。它着实值得评论。
All roads lead to Rome.
条条道路通罗马。
a flight attendant told us to keep calm and to get off the plane quietly as soon as it had touched down.
一位空中乘务员告诉我们要保持镇静，待飞机一着陆，就马上不声不响地离开飞机。