element

• 指构成复杂整体的基本、本质或不可再分的组成部分；在化学中指不能用化学方法分解为更简单物质的纯物质。

A noun referring to a fundamental, essential, or irreducible constituent of a composite entity, often used in chemistry to denote a pure substance that cannot be broken down into simpler substances by chemical means.

1. Basic componentB1formal

   A fundamental or essential part of something.

   基本组成部分

   • Trust is a key element of any strong relationship.
   • The book covers all the elements of good writing.
   • We need to analyze each element of the problem separately.

   同义词building blockcomponentconstituentfactorfeatureingredientmodulepartunit

2. B1formalscientific

   A pure chemical substance consisting of one type of atom, which cannot be broken down by chemical means.

   化学元素

   • Water is made of the elements hydrogen and oxygen.
   • Gold is a precious element found in the earth's crust.
   • The periodic table lists all known chemical elements.

3. Natural environmentB2formal

   The natural surroundings or habitat of a person or thing.

   自然环境

   • She felt completely in her element when teaching.
   • He is out of his element in a crowded city.
   • The fish thrives in its natural element of fresh water.

   同义词environmenthabitathomemediummilieu

4. Group within a larger wholeB2formal

   A distinct group or part within a larger society, organization, or system.

   成分

   • The radical element of the party opposed the new policy.
   • There is a criminal element operating in the area.
   • The younger element of the audience enjoyed the show the most.

   同义词componentconstituentfactiongroupmemberpartsectionsectorsegmentunit