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
Those are the rules and regulations, and we have to abide by them.
这些就是这儿的规矩， 大家都应该遵守。
Rowing builds up arm muscles.
划船能够锻炼臂力。
We swam and dived off the rocks into the sea.
我们从岩石上跳进海里游泳。