自然语言是表达思想的有效工具，利用自然语言表达图像的语义是一种简洁、有效的方法。

Natural language is an effective tool to express ideas. It is a sententious and effective method to express the semantic information of images.

口语是一种利用语言表达思想、进行口头交际的能力。

Speaking is an ability to use language to express ideas and make oral contacts with others.

人类语言的重要功能之一就是传递信息与表达思想，而听说是人与人交际中最主要的语言交际形式。

One of the important function of human language is information and express ideas, and that is the main communication language communication.

语言是表达思想的载体。

Language is a vehicle for expressing thoughts.

丰富的词汇有助于更好地表达思想。

A rich vocab helps in better expression of thoughts.

语言并不能很好地表达思想。

Words do not express thoughts very well.

语言是人类表达思想的媒介.

Language is a vehicle of human thought.

（用说话以外的方式）表达思想、观点等。

To express thoughts, ideas, etc. , in some other way than by talking.

而言语既可以表达思想，也可以被某些人用来隐瞒自己真实的思想。

Some people use it to express thought, some to conceal thought, but most use it to replace thought.

由此可以说，符号是表达思想感情的工具。

It can be said that symbol is a tool to express thoughts and feelings.