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1.During the reproduction period, the female mouse lays eggs.
在繁殖期，雌性老鼠会产卵。
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2.The study of reproduction periods is important for understanding how species evolve.
研究繁殖期对于理解物种进化至关重要。
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3.The researchers found that the reproductive period of this species is quite short.
研究人员发现，这种物种的繁殖期非常短。