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TOEFL BNC: 4241 COCA: 5184

atom

noun
/ˈætəm/
/ˈætəm/
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  1. the smallest particle of a chemical element that can exist原子
    • the splitting of the atom原子的分裂
    • Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water.两个氢原子和一个氧原子结合组成一个水分子。
    • The scientist Ernest Rutherford was the first person to split the atom.科学家欧内斯特·卢瑟福是第一个分裂原子的人。
    • positively charged atoms带正电的原子
    Topics Physics and chemistryb2
    Oxford Collocations Dictionaryadjective
    • charged
    • unstable
    • carbon
    verb + atom
    • split
    atom + noun
    • bomb
    See full entry
    Word Originlate 15th cent.: from Old French atome, via Latin from Greek atomos ‘indivisible’, based on a- ‘not’ + temnein ‘to cut’.
TOEFL BNC: 4241 COCA: 5184
atom

noun

ADJECTIVE | VERB + ATOM | ATOM + NOUN ADJECTIVEcharged, unstable帶電/不穩定的原子positively charged atoms帶正電的原子carbon, nitrogen, etc.碳原子、氮原子等VERB + ATOMsplit分裂原子the first person to split the atom第一個分裂原子的人ATOM + NOUNbomb原子彈
TOEFL BNC: 4241 COCA: 5184
TOEFL BNC: 4241 COCA: 5184
atom
Atoms and parts of atoms: alpha particle, anion, antiparticle...
Small amounts or pieces of something: bit, piece, fragment...

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