I think I love them because they are just graved on my DNA when I was a oosperm.

估计爸妈DNA中决定我这些爱好的碱基，在我还是个受精卵的时候就早早地排好了。

The study believed that there was no need to exchange culture fluid during the culturing of bovine oosperm in vitro.

本研究认为在牛体外受精卵的体外发育培养过程中，不必进行培养液的交换，对胚胎发育并无不良影响。