点击下方单词,选择对的这个单词
名词
1. 分子A molecule is the smallest amount of a chemical substance which can exist by itself.
1. (nontechnical usage) a tiny piece of anything
Synonym: atomparticlecorpusclemotespeck
2. (physics and chemistry) the simplest structural unit of an element or compound
多通过句子记忆单词,而不是单独死记硬背。