elbow grease

例句：

1. 1.The car ran out of gas and needed some elbow grease to get it back on the road.
   汽车没油了，需要一些油水才能重新启动。
2. 2. He was so tired that he could hardly muster any elbow grease to finish the job.
   他太累了，几乎没有足够的精力来完成这项工作。
3. 3. She used her elbow grease to help him fix the broken window.
   她用她的油水帮助他修理破碎的窗户。