erector造句
B：Cleanthemortartanks,changesealsonerectoranddoweeklymaintenance.Inset:theerectorspinemusclesliftthetorsoandtherhomboiddrawthescapulaetowardsthemidline.Surgicaltreatmentofextremelaterallumbarinterverte...
B：Cleanthemortartanks,changesealsonerectoranddoweeklymaintenance.Inset:theerectorspinemusclesliftthetorsoandtherhomboiddrawthescapulaetowardsthemidline.Surgicaltreatmentofextremelaterallumbarinterverte...