浅井 ; 干井
合抱式取土钻
挖柱孔钻
Sterling Varner, the company's president from 1974 to 1986 and still a director, was a posthole digger when Fred Koch hired him in 1948.
FORBES: Creative destruction 101
posthole:
post +? hole
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。