friend or foe

常见例句

Hollywood and science fiction novelists have been wrestling with this "friend or foe" question for decades.
几十年来，好莱坞和科幻小说家们一直在为这个“朋友或是敌人”的命题争斗不休。
For example, in one chapter, "Online Tutorials: Friend or Foe," Greg covers a number of online learning resources, noting their strengths and mapping out drawbacks and skewering weak areas.
例如，在其中一章中，“在线教师：朋友还是敌人？” ，Greg介绍了很多在线学习资源，提到了这些资源的作用，列出缺点和不够好的地方。
blog.sina.com.cn
These amplifiers are key components in a complex Identification Friend or Foe (IFF) system used to interrogate aircraft to determine their friend or foe status.
这些放大器是一种复杂敌我识别系统（IFF）的重要组成部分，专门用来问讯飞机，以确定他们是敌是友。
www.etiri.com.cn

Americans are trying to decide whether the U.A.E. is friend or foe or something in between.
NPR: United States, Dubai: Understanding the Links
Quantum dots tagging will ease "friend or foe" identification in extreme conditions on the front line.
FORBES: Nanotech Takes On Homeland Terror
Is China a friend or foe of the U.S.? Post your thoughts below.
FORBES: China's Mental Default Position