abbr. NAS Committee on Oceanography 美国国家科学院海洋学委员会; National Academy of Sciences Committee on Oceanography <美国>国家科学院海洋科学委员会; North American Students of Cooperation 北美合作制学生; National Automotive Service Company 全国机动车服务公司
🗣️ 情景例句
You're most welcome.
不用客气。
The teacher was not at all happy with his students.