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
Hi, how are you doing?
你还好吗?
Who are those people?
那些人是谁?
it requires 97 per cent less energy to travel the quarter of a million miles from the Moon to Earth-orbit than the 200 mile-journey from Earth's surface into orbit!