molecule

A single water molecule consists of two hydrogen atoms bonded to one oxygen atom.

(Chinese) 一个水分子由两个氢原子和一个氧原子结合而成。

Scientists are studying how these molecules interact to form complex proteins in the body.

(Chinese) 科学家们正在研究这些分子如何相互作用形成体内复杂的蛋白质。