pound away at
				
				
				用法和例句
- We must pound away at the job in order to finish it before sunset . 
- 我们必须继续抓紧干,在日落前完成这项工作。
- As we neared the two-mile mark  the leaders pulled away  even though my legs felt like they continued to pound away at the same rate . 
- 当接近2英里标志时,领跑者撤离,此时,我感到我的双腿仍旧以相同的速度继续奔跑。