原帖由 雲吞 于 2009-1-31 09:45 发表 $ @/ n& O b1 ` 2 f7 d$ ~& C1 s o' z2 C) \% B' v0 Q+ r6 U
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 4 W2 `3 J. G$ N
1 S- K7 v8 @7 T. ~4 v8 T/ Z% C( q
& r+ q, R) t. L- {# D# J- K* `
I'll tell the professor, you don't feel lower back pain when you are talking standing.