原帖由 雲吞 于 2009-1-31 09:45 发表 5 C8 ]4 h' c8 I! y6 S1 \' K
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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 % d2 T+ H# Z0 K* L/ G
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I'll tell the professor, you don't feel lower back pain when you are talking standing.