单词	obsn
释义	obsn Observation,观察
随便看	element of birth and death element of centring element of coal seam occurrence element of commerce element of complex element of composite symmetry element of cone element of confidence element of construction element of contact element of cost element of credit element of crime element of crystal element of cylinder element of design element of dialectics element of difficulty element of distance element of eclipse Element of effect element of elastically supported element of electrical circuit element of electric-charge element of engine