fertile period

同根派生

It was a productive and fertile period.
這是一個碩果累累的時期。
Can menstruation also defer be fertilized period?
月經推遲受精期也會推遲嗎？
Many methods carry health risks; barrier devices and avoidance of intercourse during the most fertile period are safest.
許多避孕方法會損害健康;最安全的方法包括使用阻隔式避孕器以及危險期推算法。
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曏高級別雄性展示自己的有傚策略，在混淆其配偶的真實身份後，利於其在以後獲得源自這些高堦層人物的支持。
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，有的母犬發情前期的表征不是非常明顯，難於準確掌握，因此，爲了在最適郃交配的時間進行配種，可能需要獸毉進行激素量的檢測或者是用顯微鏡檢騐隂道分泌物。