5 Simple Techniques For Excavation
该例句来自Hansard存档。包含以下议会许可信息开放议会许可v3.0 Among the excavators promptly broke down and was from action for numerous months. 来自 Hansard archiveJanuary one, 1996 This dynamic earth: the Tale of plate tectonics Within the early nineteen sixties, the emergence of your concept of plate tectonics begun a re