Concentration of sulfuric acid
[建] 硫酸的浓缩
🧩 词语组成解析
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];
a. 硫磺的；含多量硫磺的；含（六价）硫的
🗣️ 情景例句
I major in English and minor in French.
我主修英语，副修法语。
There was a big crowd and we had difficulty getting a taxi.
外面有一大群人并我们有很困难招一辆出租车。
I looked at the map and then at the millimeter.
我看了看地图，又查了一下里程表。