把这个因素排除出去了。
我婆婆说我老公小时候这样的walker经常tip over,现在的设计早就.
所有跟帖:
• 不是这原因。自己去study吧. -kozi- ♀ (0 bytes) () 08/04/2009 postreply 07:59:33
• 不是这原因。自己去study吧. -kozi- ♀ (0 bytes) () 08/04/2009 postreply 07:59:33
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