atom

英 [ˈætəm]

美 [ˈætəm]

n.  原子

复数：atoms　

高考CET4CET6考研TOEFLTEM4TEM8计算机

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

• There isn't atom of sense in what you say.
  你所说的话没有道理。
• An atom itself is a complete whole, with its electrons, protons and neutrons and other elements
  一个原子本身就是一个完整的整体，包括电子、质子、中子及其他元素。
• 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。
• So, which atom is in need of those lone pair electrons?
  那么，哪个原子需要这对孤对电子呢？
• 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。
• We will consider this Zeeman effect for the hydrogen atom.
  我们将对氢原子考虑此塞曼效应。
• The compact core of the atom begins to appear.
  紧凑的原子内核现身了。
• 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。
• A proton or a neutron has about the same mass as a hydrogen atom.
  质子或中子的质量和氢原子的质量大致相同。
• His theory of atom was not sufficient for treatment of large atoms or molecules.
  他的原子理论用于处理大的原子和分子是不能令人满意的。