1 sentence

1. 一切生物的生存都需要钠，而且大部分生物都需要钙质来生成骨骼和贝壳。

   yī​qiè shēng​wù de shēng​cún dōu xū​yào nà, ér​qiě dà​bù​fen shēng​wù dōu xū​yào gài​zhì lái shēng​chéng gǔ​gé hé bèi​ké.

   All creatures need sodium to live and most need calcium to build bones and shells.

   Source: UM-Corpus: Science