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
The millionaire had a personal finance consultant invest his money.
这个百万富翁有一位私人理财顾问负责他的投资。
Which umpire will referee the baseball game?
不知道哪一个裁判要执法这场棒球赛？
When he woke up, he was still on the mattress.
他醒来时，仍然躺在床垫上。