单词	mean life-span
释义	mean life-span 平均寿命
随便看	marker attachment marker attributes marker band marker beacon marker-beacon aircraft antenna marker-beacon antenna marker beacon indicator marker bed marker bit markerboard markerboards marker bomb marker bubble marker buoy marker cell marker character marker chromosome marker circuit marker clamp marker clone marker coil marker colo(u)r marker colo(u)ring marker control marker copier 假仁假意假以辞色假公济私假公营私假力于人假名托姓假惺惺假慈悲假戏真做假手于人ばらにく【肋肉】ばらばらばらまくばらまく【散蒔く】ばらもんきょうばらもん教ばららいかばらんすばらんすしーとばらーど