Absolute index of refraction
[化] 絕對折射率
?? 詞語組成解析
absolute
['?bs?lu:t]
adj. 絕對的，完全的;不受任何限制[約束]的;無條件的;有無上權力或權威的;
n. 絕對;絕對事物;
index
['?nd?ks]
n. 索引;<數>指數;指示;標志;
vt. 給…編索引;把…編入索引;[經濟學]按生活指數調整（工資、價格等）;
vi. [機械學]轉位;
in(in)+dex(proclaim)→指針；索引；指數；食指；指標
of
[?v]
prep. 關于;屬于…的;由…制成;
aux. 助動詞 [非標準用語、方言] =have [主用于虛擬語氣];
??? 情景例句
But don't give up.
但是千萬不要放棄。
Beauty is but skin-deep.
紅顏易變。
He and his staff began throwing furniture out of the window.
他與店員動手向窗外投擲