All these nouns refer to the line or narrow area that marks the outside limit of something such as a surface.

所有这些名词指某物外部界限的界限或狭长地带。

youdao

All these nouns refer to the line or narrow area that marks the outside limit of something such as a surface.

所有这些名词指某物外部界限的界限或狭长地带。

youdao