Acidity of residue
[化] 残油酸度; 渣油酸度
🧩 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
Please pass me a knife.
请把刀递给我。
I was wondering if you'd let me stay with you for a few days.
不知道你能否让我在你这里住几天。
Have you received a letter from Jim yet?
你收到了吉姆的来信没有？