Secdef
abbr. Secretary of Defense 国防部长
🗣️ 情景例句
I'm looking for 83 Wooster Street.
我想找Wooster街83号。
And our successful techniques, and to speak about our failures.
和成功技巧，并讲出我们的失败之处。
I used to travel by air a great deal when I was a boy.
我在幼年的时候，曾多次乘飞机旅行。