然而毫无疑问的是总会有一个自然的界限限制人们每周花在网络上的时间。
Without doubt, however, there will be a natural limit to how much time per week people will spend online.
沉迷于网络游戏会使现实世界与虚拟世界的界限愈发模糊。
Online game addiction can blur the line between reality and the virtual world.
网络教学平台打破了时间、空间的界限。
The platform of network teaching breaks the limitation of time and space.
网络教学平台打破了时间、空间的界限。
The platform of network teaching breaks the limitation of time and space.
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