rén lèi / shì / fù zá / de / duō xì bāo shēng wù / yóu / shù shí wàn yì / gè / xì bāo / zǔ chéng人类是复杂的多细胞生物,由数十万亿个细胞组成。Humans are complex multicellular organisms composed of trillions of cells.