单词	natural hierarchy
释义	natural hierarchy 自然层次结构
随便看	automatic document clustering automatic document control system Automatic Document Detection automatic document distribution Automatic Document Feeder automatic document handier automatic document handler automatic document processing automatic document request service automatic document retrieval system automatic document-size detection technique Automatic Document Storage and Retrieval automatic dodging automatic doffer automatic doffing automatic dog automatic dog feeder automatic door automatic door bottom automatic doorlock automatic door lock automatic door locks automatic door operator automatic doors Automatic Door Seal