Efficiency of boiler
[机] 锅炉效率
🧩 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];
🗣️ 情景例句
I see. By the way, how many people are working in your factory now?
哦，我知道了。顺便问一下，现在贵厂有多少在职职工？
My father refused to consent to my marrying her.
父亲拒绝答应我和她结婚。
But I must ask my parents first. What time shall I come?
不过我必须先问问父母。我几点钟来呢？