engage

• Yes , he has engaged in international trade .
  是的，他从事国际贸易。
• He is engaged in his military studies .
  他大概在琢磨他的军事问题吧。
• He industriously engages in unostentatious hard work ...
  埋头苦干。
• He is engaged in doing his french exercises .
  他正忙于做法语练习。
• We have engaged three express tickets .
  我们已经预定了三张快车票。
• It contained a sequence of engaging dials .
  它包括一系列啮合的拨号盘。
• The thoughts of both engaged elsewhere .
  两个人的思想都集中在别的方面。
• That tone means that the number is engaged .
  那种声音表示该号电话占线。
• My mind is very much engaged with him at present .
  我现在满脑子都是他。
• My friends have engaged me to stand in the front .
  我的朋友让我抛头露面。