n.磨石，砂轮

原形：grindstone复数：grindstones

He put his nose to the grindstone and finished the project ahead of schedule.
他埋头苦干，提前完成了项目。
After a long day at work, she was too exhausted to do anything but hit the grindstone again tomorrow.
工作了一整天后，她累得什么也做不了，只能明天继续努力。
His dedication to the grindstone has earned him a promotion at the company.
他对工作的投入使他在公司得到了晋升。
It's time to grindstone; our deadline is approaching fast.
是时候埋头苦干了，我们的截止日期快到了。
The young apprentice learned the value of hard work by applying himself to the grindstone every day.
这个年轻的学徒通过每天努力工作学会了勤奋的价值。
With exams coming up, students have no choice but to put their noses to the grindstone.
考试临近，学生们不得不埋头苦读。
His success is a testament to what can be achieved by keeping one's face to the grindstone.
他的成功证明了持续努力可以达成目标。
After a lazy weekend, it was back to the grindstone on Monday morning.
度过了懒散的周末后，周一早上又回到了忙碌的工作中。
The grindstone of daily routine can sometimes wear a person down.
日常工作的重压有时会使人感到疲惫不堪。
She realized that constant grinding at the grindstone without breaks was counterproductive to her productivity.
她意识到不停地工作而不休息其实对效率是有害的。