Natural estrus

• 自然发情

Natural estrus的用法和样例：

例句

1. The sows of natural oestrus ovulated more swiftly than the superovulation, and the embryo quality of nature was better.
   超数排卵影响胚胎的质量，自然发情母猪较超数排卵母猪排卵较快，且胚胎质量较好。