working ground connection 工作接地
safe working voltage to ground 对地安全工作电压
working voltage to ground 对地工作电压
ground-working equipment 土壤耕作机具
ground-working disk blade 切土圆盘刀
hoc ground truth working group 地面实况特设工作组
They also suggest actions like providing protective boots to wear while working in fields, and not sleeping on the ground.
VOA: special.2010.01.25
The two Americans were working at the Aberdeen Proving Ground in Maryland.
VOA: special.2010.02.09
"While we were working, we realized the ground was shaking." "We didn't know what was happening.
VOA: standard.2010.04.02
应用推荐