Acidity index
[機] 酸度指數(shù)
?? 詞語組成解析
acidity
[?'siditi]
n. 酸性;<化>酸性;<醫(yī)>胃酸過多;（言詞等的）類刻;
index
['?nd?ks]
n. 索引;<數(shù)>指數(shù);指示;標(biāo)志;
vt. 給…編索引;把…編入索引;[經(jīng)濟學(xué)]按生活指數(shù)調(diào)整（工資、價格等）;
vi. [機械學(xué)]轉(zhuǎn)位;
in(in)+dex(proclaim)→指針；索引；指數(shù)；食指；指標(biāo)
??? 情景例句
but he wants to do it
但他要削減
You have too much time on your hands. Why don't you start a hobby?
你有太多的空閑時間，何不開始一樣嗜好呢？
Be careful!
注意！