分子,成分,要素
  • element

    (noun)
    分子,成分,要素
  • elements

    (noun)
    原理,基础
    .An element is a substance such as gold, oxygen, or carbon that consists of only one type of atom
    Aluminium is an element - its symbol is Al.
  • elements

    (noun)
    原理,基础
    .An element is a substance such as gold, oxygen, or carbon that consists of only one type of atom
    Aluminium is an element - its symbol is Al.
noun