THE BASIC PRINCIPLES OF DIGGING

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 One of many excavators promptly broke down and was from motion for various months. 来自 Hansard archiveCrawler excavators are often known as track excavators, compact excavators, standard objective excavators, or regular excavators. They operate on two big tracks