Department of energy
能源部（DOE，美国）；能源系
🧩 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
When you go to a new school it takes a while to know the ropes.
到一所学校读书要花一段时间熟悉情况。
I would like to talk to your chief.
我想请你们主管讲话。
Sally was very excited because she had never travelled on a train before.
萨莉非常激动，因为她从未乘过火车。