词汇	偃俛
释义	偃俛 yǎn miǎn俯仰。
随便看	underground engineering excavation underground engineering station underground engineering surrounding rock underground engineering survey underground entomology underground entrance underground environment underground eontinuous wall underground equipment undergrounder under-grounder underground erosion undergrounders under-grounders underground excavated tunnel underground filler underground filling underground filling system underground film underground films underground filtration underground filtration field underground excavation underground excavation engineering underground excavation method