pursuit  
noun uk/pəˈsjuːt/ us/pɚˈsuːt/
  (ACTIVITY)      
  [ C usually plural ]嗜好,消遣,娱乐 
an activity that you spend time doing, usually when you are not working
  I enjoy outdoor pursuits, like hiking and riding. 我喜欢户外活动,比如徒步旅行和骑马。 
 I don't have much opportunity for leisure pursuits these days. 我近来没有多少时间可以花在业余爱好上。 
   (FOLLOWING)      
  [ C or U ]追踪;追击 
the act of following someone or something to try to catch him, her, or it
  Three people have been killed in high-speed pursuits by the police recently. 有3人在最近警察的高速追捕中毙命。 
 The robbers fled the scene of the crime with the police in pursuit. 抢劫者逃离了犯罪现场,警察紧追不舍。 
   (ATTEMPT)      
C2 [ U ]追求;从事;实行 
the act of trying to achieve a plan, activity, or situation, usually over a long period of time
  the pursuit of happiness 对幸福的追求 
 The company is ruthless in its pursuit of profit. 公司为追求利润不择手段。 
 The union is on strike in pursuit of (= trying to achieve) a ten percent pay increase. 工会为了争取10%的加薪而罢工。