Secdef
abbr. Secretary of Defense 国防部长
🗣️ 情景例句
I'd like you to meet the head of the student relations committee.
我想见见学生关系委员会主席。
You cannot make a silk purse out of a sow's ear.
猪耳朵做不成丝钱包；巧妇难为无米之炊。
An apple a day keeps the doctor away.
一天一苹果，医生远离我。