本帖最后由 billzhao 于 2012-5-19 12:12 编辑 ) q) z! A r4 ?- ^ , ^9 {' f: a. W, }0 F3 j; L好像南方或者北方有的地方s sh不分,下面视频应该有所帮助。* X/ W t. B" \- Z
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很喜欢老师的自信,她说 It's simple. It's easy. Once you watch this video, you get it, and you'll never make the mistake again. People will understand you, and your life will be fantastic.' X: R8 F5 e% j( W" T$ w