| 单词 | atom |
| 释义 | atom atom /ˈæt.əm/ aep /ˈæt̬-/ noun [C] ► B2 the smallest unit of any chemical element, consisting of a positive nucleus surrounded by negative electrons. Atoms can combine to form a molecule: » A molecule of carbon dioxide (CO2) has one carbon atom and two oxygen atoms.» FIGURATIVE He hasn't an atom of sense (= he has no sense), that boy.Thesaurus+: ↑Atoms, molecules and sub-atomic particles • • • Extra Examples:» The nucleus of a deuterium atom contains a proton and a neutron.» Scientists are working to harness the power of the atom. |
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