workhorse [ˈwɜ:rkhɔ:rs]

例句:

• The main workhorse of the nacelle is the generator.
  来自SA
• My husband never even looked at me. I was just a workhorse bringing up three children.
  我丈夫甚至从不看我一眼。我只是个任苦任劳养育3个孩子的机器。
  
• Van de Graaff generators are the current workhorse of nuclear stucture research.
  茫德格喇夫加速器是研究原子结构的通用工具.
  
• Nike's mechanical workhorse that fine - tunes the design of clubheads.
  耐克公司用来微调节器棒头设计的机械试验台.
  
• Even for TV's most famous workhorse, Mr. Leno has been clocking hours.
  来自WSJ
• The "drunk workhorse" character of the Barbadian singer, who frequented previous albums in some capacity, is absent here.
  来自BBC