fertile period

同根派生

It was a productive and fertile period.
这是一个硕果累累的时期。
Can menstruation also defer be fertilized period?
月经推迟受精期也会推迟吗？
Many methods carry health risks; barrier devices and avoidance of intercourse during the most fertile period are safest.
许多避孕方法会损害健康;最安全的方法包括使用阻隔式避孕器以及危险期推算法。
Hormone analysis showed that the calling behaviour of copulating females was unrelated to their fertile period and likelihood of conception.
因此，嚎春可能是雌猩猩用以向高级别雄性展示自己的有效策略，在混淆其配偶的真实身份后，利于其在以后获得源自这些高阶层人物的支持。
However, signs of proestrus are not obvious in some bitches.To catch the peak fertile period, a veterinarian may need to perform hormone tests or examine vaginal smears under a microscope.
然而，有的母犬发情前期的表征不是非常明显，难于准确掌握，因此，为了在最适合交配的时间进行配种，可能需要兽医进行激素量的检测或者是用显微镜检验阴道分泌物。