rollerskaterollerskate1.Sheroller-skatedacrossratherunsteadily.她穿着旱冰鞋晃晃悠悠地滑了过去。2.Shetradedherroller-skatesforbilly'sportableradio.她拿旱冰鞋换了比利的手提收音机。3.Sheroller-skatedacrossratherunsteadily她穿著旱冰鞋晃晃悠悠地滑了过去4.Howgoodareyouatcuttinghaironskates蹬着旱冰鞋剪头这主意多好?5.Shetradedherroller-skatesforbilly'sportableradio她拿旱冰鞋换了比利的手提收音机