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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 % i2 v* r) `+ c, y: j3 `, G6 D' M2 B$ ^9 M4 [
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I'll tell the professor, you don't feel lower back pain when you are talking standing.