n. (physics and chemistry) the smallest component of an element having the chemical properties of the element
n. (nontechnical usage) a tiny piece of anything
n. 原子, 核能, 微粒, 微量
[计] 原子
1. An atom is the smallest unit of matter.
原子是物质的最小单位。
2. Everything around us is made up of atoms.
我们周围的一切都是由原子组成的。
3. Scientists study atoms to understand how different materials behave.
科学家研究原子以了解不同材料的行为。