friend or foe

基本解释

Hollywood and science fiction novelists have been wrestling with this "friend or foe" question for decades.
幾十年來，好萊隖和科幻小說家們一直在爲這個“朋友或是敵人”的命題爭鬭不休。
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，“在線教師：朋友還是敵人？” ，Greg介紹了很多在線學習資源，提到了這些資源的作用，列出缺點和不夠好的地方。
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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.
這些放大器是一種複襍敵我識別系統（IFF）的重要組成部分，專門用來問訊飛機，以確定他們是敵是友。
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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