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候鸟
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候鸟
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migrant birds
候鸟
一年之中随着季节变化,定期地沿着比较稳定的路线,在繁殖区和越冬区之间迁徙的鸟类。又称迁徙鸟。
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priority traffic management
priority tree method
priority tree method 0'''
prior knowledge
prior-posterior analysis
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prior right of trademark
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Pripyat River
Priscillianists
prism
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prismatic binoculars
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