atom

英 [ˈætəm]

美 [ˈætəm]

n.  原子

复数：atoms　

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Oxford 3000 / Collins.2 / BNC.4241 / COCA.5184

牛津词典

noun

• 原子
  the smallest part of a chemical element that can take part in a chemical reaction
  1. the splitting of the atom
     原子的分裂
  2. 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。

柯林斯词典

• N-COUNT 原子
  Anatomis the smallest amount of a substance that can take part in a chemical reaction.
  1. A methane molecule is composed of one carbon atom attached to four hydrogens.
     甲烷分子由1个碳原子与4个氢原子构成。

英英释义

noun

• (nontechnical usage) a tiny piece of anything
  Synonym:moleculeparticlecorpusclemotespeck
• (physics and chemistry) the smallest component of an element having the chemical properties of the element

双语例句

• The anion OH having one oxygen and one hydrogen atom.
  含一个氧原子和一个氢原子的OH负离子。
• Neutrons and protons are bound together in the nucleus of an atom.
  在原子核里，中子和质子是结合在一起的。
• A negative ion is an atom which has gained one or more extra electrons.
  获得一个或多个额外电子的原子称为负离子。
• In this model the arrangement of bonds around the central atom is considered to depend upon how many valence-shell electron pairs.
  在这个模型中，认为围绕中心原子的化学键的排列取决于价层中电子对的数量。
• There isn't atom of sense in what you say.
  你所说的话没有道理。
• The power of the atom can be used to produce electricity.
  原子能可以用来发电。
• A methane molecule is composed of one carbon atom attached to four hydrogens.
  甲烷分子由1个碳原子与4个氢原子构成。
• Ion: Atom or group of atoms with one or more positive or negative electric charges.
  离子：带有一个或多个正电荷（阳离子）或负电荷（阴离子）的原子或原子团。
• And ion, which is an atom or group of atoms with an electrical charge.
  和离子，它是一个原子或原子的电荷组。
• Water is spoken of as containing two atoms of hydrogen and one atom of oxygen.
  人们说水含有两个氢原子和一个氧原子。