willpower [ˈwɪlˌpaʊɚ]

例句:

• I know I've got the willpower to do it.
  我知道我有毅力做这事儿。
  
• His attempts to stop smoking by willpower alone failed.
  他多次想单凭意志力戒烟都没有成功。
  
• She managed to stop smoking by sheer willpower.
  她全靠意志力戒了烟.
  
• To have willpower, you must first have willpower.
  来自SA
• But willpower goes out the window after that.
  来自SA
• It probably demands greater willpower and focus than almost anything else.
  来自THETIMES