Sterility is some permanent factor preventing procreation.
不育是阻碍生殖的一种永久性因素。
Sterility of sows refers to a pathological phenomenon of permanent or temporary inability to conceive or produce an offspring, triggered by procreation dysfunction of the sows.
母猪不孕症是母猪生殖机能发生障碍，暂时或永久性不能繁殖后代的病理现象。
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