单词	保持者
释义	保持者 bǎochízhěretainer
随便看	economical span economical span length economical speed Economical speed factor economical speed range economical stabilization economical stove economical structure economical style economical style CNC lathe economical substitute economical-suitabled housing economical system economical system in circular agricultural economical taker style economical tanker economical tanker style Economical target economical targets economical team economic alternative Economical theory economical thickness economical thickness of insulating layer economical thought