grindstone
n.磨石;砂轮;持续辛勤地工作;努力不懈
网络解释.磨石;天然磨石;旋转磨石;磨石砂轮
词形变化:
复数:grindstones
keep one's nose to the grindstone 1 . 一刻不停地拼命干 keep one's nose to the grindstone 2 . 一刻不停地拼命干 习惯用语 put (one's) nose to the grindstone【非正式用语】 1 . 认真地工作 put (one's) nose to the grindstone【非正式用语】 2 . 认真地工作
abrasive