双语和双言现象有什么区别？
文章通过对河南省非师范类高等学校在校生及在职往届毕业生普通话使用情况的调查分析，研究探讨了该人群双言使用情况和心态；
This is the report of an investigation of the use of Putonghua among students of and graduates from the non normal colleges and universities in Henan Province.
他把双肘支在膝盖上，双手托着下巴，一言不发的想着什么。
He leant his two elbows on his knees, and his chin on his hands and remained rapt in dumb meditation.
他把双肘支在膝盖上，双手托着下巴，一言不发的想着什么。
He leant his two elbows on his knees, and his chin on his hands and remained rapt in dumb meditation.
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