它具有专业性强，适用面窄，针对性强，扩展性强等优点。

It has specialized, is suitable the surface to be narrow, pointed, extension strong and so on merits.

youdao

它具有专业性强，适用面窄，针对性强，扩展性强等优点。

It has specialized, is suitable the surface to be narrow, pointed, extension strong and so on merits.

youdao