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
Let's get in shape.
咱们去健身吧。
I hope you can find your glasses soon.
我希望你很快就找到你的眼镜。
We are prohibited from smoking on school grounds.
我们被禁止在校园内抽烟。