Secretary of defense
n. 国防部长\\n
🧩 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
It's getting late. Please excuse me, but I must leave right away.
时间不早了。对不起，我得赶紧走了。
I know he will understand your letter.
我知道他会明白我的信。
It is useless to argue with the mind in this condition.
在这种情况下，你和头脑争吵让它松手是无济于事的。