The online spoken language training system is an important component of the remote tutoring system, at the same time it is difficult to realize in the remote tutoring system.
在线口语训练系统是远程教学系统的一个重要组成部分，同时也是其中较难实现的一部分。
The online spoken language training system is an important component of the remote tutoring system, at the same time it is difficult to realize in the remote tutoring system.
在线口语训练系统是远程教学系统的一个重要组成部分，同时也是其中较难实现的一部分。
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