单词	safety duty
释义	safety duty 安全职责
随便看	circular lens circular lens transfer function circular lesion tinea circular leter circular letter circular letter of credit Circular letter of cred IT circular level Circular Lid circular life belt circular life-belt circular ligament circular line circular linear scanning converter circular liner circular line system circular lining circular lining tunnel circular linkage circular linkage group circular linkage map circular linked list circular linking machine circular lip circular list