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
How do you like our weather?
你喜欢我们这里的天气吗？
It's faster but more expensive to ship goods by air.
空运较快但运费较高。
We came here about two years ago.
我们大约两处前来到这儿。