结果：不同品系、同品系不同微生物等级的实验大鼠间在某些指标上有一定的差异。

Results: There were differences in the indexes between different strains of laboratory rats and between same strain and different microbe control grades of laboratory rats.

youdao

神经生物学中有一个等级系统，无脊椎动物的研究不被看好，除了非常特殊的例子：枪乌贼巨大的轴突。

There was a hierarchical system in neurobiology, and working in invertebrate animals was not looked upon favorably, except in a very special case: the squid giant axon.

youdao

有趣的是人自诩是敏感的生物，却对水温只能分为这么几个等级。

Funny how sensitive humans are to just a few degrees difference in water temperature.

youdao