Oss
abbr. [美]航天科学局（Office of Space Sciences）；[美]战略情报局（Office of Strategic Services）
🗣️ 情景例句
What was that about?
说些什么？
He's got a bad headache.
他头痛的厉害。
The conference was very well organized. Everything began and finished on time.
会议安排的很好。开始和结束都准时。