translation.en: And it turns out we have about 50,000 major gene families, but every new sample we take in the environment adds in a linear fashion to these new families.
translation.zh: 结果表明我们找到了大约5万个 主要的基因家族 但我们从环境中获得的每个新样品 都只是对这些新基因家族的线性补充