X3D is the name under which the development of VRML is continued.
X3D是虚拟现实造型语言（VRML）命名空间的延续。
At first, the author introduces the general situation of VRML and Distance teaching.
首先介绍了当前VRML和远程教学的概况；
At first, the author introduces the general situation of VRML and Distance teaching.
首先介绍了当前VRML和远程教学的概况；
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