workhorse
	英 ['wɜːkhɔːs]
美 
	    
	
    - n. 做重活的人;驮马;重负荷机器
 
- adj. 工作重的;吃苦耐劳的
 
    
	 
    英英释意
	
	- 1. machine that performs dependably under heavy use;
 - "the IBM main frame computers have been the workhorse of the business world"
 
- 2. a horse used for plowing and hauling and other heavy labor