原帖由 雲吞 于 2009-1-31 09:45 发表 2 J4 V2 E Z3 D+ i
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I'll tell the professor, you don't feel lower back pain when you are talking standing.
原帖由 雲吞 于 2009-1-31 09:45 发表 ' t2 n* O$ ~: Y8 u( x$ a- q $ m- @+ w; f t! n 0 K; s# A9 V# i0 iI'll tell the professor, you don't feel lower back pain when you are talking standing.