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
What kind of game devices do you have?
你们有什么样的游戏操纵系统？
Thank you.
谢谢您。
Wei Hua had a busy day yesterday.
昨天魏华很忙。