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对养鸽者来说,其粪便的各种变化都显示鸽子的健康状况,细心乃至正确的判断是至关重要的,但我们还是有必要对其机理心知肚明。
For pigeon saviors, the changes in their faeces show the health of the pigeons. Careful and even judgmental judgments are crucial, but we still need to know their mechanics well.