This variation doesn't necessarily translate to observable, or phenotypic, differences among people, however.

然而，这种变异并不化为人与人之间可观察到或表型差异。

The core microbiota is the same for all individuals while the variable microbiota is different between individuals in response to unique lifestyles and phenotypic and genotypic determinants.

所有人核心微生是相同，而可变微生则随着每个人生活方式、表型和基因型等决因素不同而各有不同。