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  3. Tests with artificial stars have proved that certain night-flying birds are able to follow the stars in their long-distance flig

Tests with artificial stars have proved that certain night-flying birds are able to follow the stars in their long-distance flig

admin2014-08-25  42
问题 Tests with artificial stars have proved that certain night-flying birds are able to follow the stars in their long-distance flights.
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答案通过人造星空的实验表明，一些在夜间长途飞行的鸟类是依靠星来辨别方向的。
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