怎么给瑜珈球打气？
直径大概是60厘米的瑜珈球。原装打气筒找不到了。求高手图解怎样打气。打气筒针试过了戳不进去，而且印象中原来也没有用到过针。
http://www.ebay.com.au/itm/Yoga-Ball-Swimming-Ring-Balloon-Pillow-Inflatable-Toy-Foot-Air-Pump-Inflator-New-/180984650395?pt=AU_Bicycle_Accessorries&hash=item2a23869a9b&_uhb=1
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