中國持續擴張海軍軍備,挑戰美國海上霸權的野心越來越明顯,中國一艘新型匿蹤戰艦近日進行海試的照片曝光,引發外界對中國海軍現代化進程的高度關注。軍聞 ...
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A fun test about a serious issue. Calculate your environmental footprint in 5 minutes and receive tips on how to reduce it.