concentrates

例句:

• Marx concentrates on the alienation of labour and emphasizes the invidious aspects.
  马克思集中论述了劳动的异化,强调它令人厌恶的方面.
  
• Iris's hand trembles but she concentrates on the task.
  来自J. C. Oates
• The bulk of the population concentrates in the cities.
  大部分人口集中在城市里.
  
• This helps you to be aware of time and concentrates your mind on the immediate task.
  这有助于你掌握时间，全神贯注于眼前的任务。
  
• The power plant just concentrates it in one region.
  来自SA
• Operating with forty members it concentrates the mind.
  来自NEWYORKER