operating

• My assistant will operate the tape-recorder .
  我的助手将操纵录音机。
• These four causes do not operate singly .
  这四个原因并不单个起作用。
• The college is not operated for profit .
  这所大学不是为了营利而办的。
• Businesses operate in a number of environments .
  商业的环境错综复杂。
• All summer and all fall i've operated .
  整个夏季和秋季我都在开刀。
• Several causes operated to bring about the war .
  那场战争的起因有几个。
• I would never learn to operate those machines .
  我永远也别想学会开床子。
• The oven operates on the air-bath principle .
  恒温槽工作基于空气浴原理。
• The whole apparatus operates under high vacuum .
  整个装置在高真空下运转。
• Our factory operates round the clock on three shifts .
  我们厂日夜三班倒。