词汇	base levelling
释义	base levelling 基准化作用
随便看	underground pipe lines Underground pipelines and cables underground pipelines comprehensive design underground pipelines system underground pipeline survey underground pipeline system underground pipe net underground pipe network underground pipe networks underground pipes undergroundpipe system underground pipe system underground pipiline passage underground piping underground pirated goods production center underground pirate plants underground planning underground plant Underground plant houses Underground plastic drain pipe underground poetry Underground poetry writing Underground Police underground policies underground pollution