Refractive index
[化] 折光率; 折射率
🧩 词语组成解析
a. 折射的, 有折射力的\\n[医] 折射的, 屈光的
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
It's a piece of cake.
这是小菜一碟。
I wouldn't worry about it, if I were you.
我是你的话，我不会担心的。
For example, you might pick up a travel book and read a few pages before going to sleep. It is enough to dip into it and read bits here and there. In a word, this is tasting.
比方说，你可能随手拿起一本游记，在睡觉之前读它几页。这种书只要浏览一下，这儿读一点，那儿读一点也够了。简而言之，这就是“浅尝”。