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来源:雅诚德英语网
The U. S. Navy kept its Marine Mammal Program a secret until the 1990s, and this spring CNN became one of only a handful of media outlets to see firsthand how the program works.
美国海军一直保持这个秘密项目至90年代,在今年春季CNN才成为少数几个有机会一睹该项目运作方式的媒体。