柯林斯词典molecule /ˈmɒlɪˌkjuːl/ (molecules) 1. N-COUNT A molecule is the smallest amount of a chemical substance which can exist by itself. 分子 ...the hydrogen bonds between water molecules. …水分子之间的氢连接。 返回 molecule剑桥词典the simplest unit of a chemical substance , usually a group of two or more atoms 分子 返回 molecule