Acidity of petroleum product
[机] 石油产品的酸度
🧩 词语组成解析
acidity
[ə'siditi]
n. 酸性;<化>酸性;<医>胃酸过多;（言词等的）类刻;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
but there's a letter here addressed to you,
这确实有一封信是寄给你的。
Would you mind if I opened the window?
我开窗，可以吗？
He waited until the volcano became quiet and he was able to return two days later.
他等到火山平静下来，两天以后又返回去。