科研之友
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<正>在一次徒步旅行中,本文的主人公发现一只极美的天鹅,但是这只天鹅不能发出声音。When Ariel Cordova-Rojas rode her bike to Jamaica Bay Wildlife Refuge in Queens,New York,last November,she planned to go hiking and bird-watching.Bingo!A mile into her walk,she spotted a female mute (缄默的) swan near the water’s edge.Cordova-Rojas,30,who had worked at the Wild Bird Fund rehabilitation center in Manhattan,knew that mute swans can be aggressive.But as she approached this one,it didn’t move.
