Question

请帮忙翻译句子，英译汉

However, this is clinically difficult to achieve in a species characterized by a proestrus of 7–10 d and a fertile period occurring on Days 10–13.

Answer 1

但是，对于一个具有7-10天的发情期和第10-13天间的不育期的(生物)种，这在临床上很困难获得。

Answer 2

然而,这点是很难做到的.临床实验品种的特点表现在发情前期7-10天,生育期10-13天期间发生.

Answer 3

原文
However, this is clinically difficult to achieve in a species characterized by a proestrus of 7–10 d and a fertile period occurring on Days 10–13.

翻译然而，这临床地难以在有在数天发生 10-13 的 7-10 d 和一个肥沃的时期 proestrus 的特点的一个种方面达成。
文