The present study was to characterise the properties of bovine endocardium endothelial cells (BEEC)-associated apyrase.

本文旨在研究牛心内膜内皮细胞apyrase。

Both groups are Nuer, but hate each other with a grimness that has come to characterise relations between many pastoralist peoples in Africa.

这两个部族虽同属Nuer人，却彼此深深视，而这深恨在非洲很多游牧民族之间极其常见。