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
Don't be so miserable!
别这愁眉苦脸的。
When was the last time he wrote you ?
他给你写最后一次是什么时候？
Tommy had already swallowed them!
汤米已经把硬币咽了下去！