The huge challenge facing efforts to locate the wreckage of flight MH370 is not just about the conditions in some of the planet’s most inhospitable oceans. It is about narrowing down the area of the search, which at present encompasses 469,407 square nautical miles of ocean, or almost 622,000 square miles or 1.6m square km – an area just slightly smaller than Alaska.
搜寻MH370航班残骸的巨大挑战，不只在于目标海域海况极为恶劣，还在于搜索范围太大。目前，搜索范围覆盖469407平方海里的海域，合近62.2万平方英里或160万平方公里，面积仅略小于美国阿拉斯加州。
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