lubrication [ˌlubrɪˈkeʃən]

例句:

• Lubrication reduces noise and wear.
  润滑作用能减少噪音和磨损.
  
• We shall require more lubrication oil this month.
  这个月我们需要更多润滑油.
  
• Sludge can also clog oil passages and prevent normal engine lubrication.
  油泥还会阻塞油路,妨碍发动机的正常润滑工作.
  
• Like all joints, the knee needs lubrication to function properly.
  来自BBC
• Lights...to keep the driver informed when anything goes wrong with the lubrication.
  来自Daily Express
• Use lubrication to speed up the process; keep a tube by the bed.
  来自BBC