英语翻译In vivo studies demonstrated that the long-term chilled

In vivo studies demonstrated that the long-term chilled semen remained fertile at least 11 d of storage,which confirms present and previous in vitro studies.
活体研究证明了长期冷冻的精子至少可以在十一天的贮存时间内保持其活性,这也证实了体外受精研究原来和当前出现的一些现象.
To improve the fertility rate of long-term stored samples,the interest of medium exchange,both before assessing semen quality as well as before AI,warrants further studies.
为了改善长期存储样本的繁殖率,不管在估定精子质量还是在人工授精之前,都需要进一步研究培养介质交换的重要性
vivo活体培养
vitro试管培养
fertile（精子）有活性的
--Will