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的特性。

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

两个部族虽同属Nuer人，却彼此仇视，而的仇恨在非洲很多游牧民族之间极其常见。