Russian-English translations for оказия

• occasion
  At this point, she seized the occasion to make her own observation
  I had no occasion to feel offended, however
  I could think of two separate occasions when she had deliberately lied to me
• opportunity
  The world is full of opportunities and its up to me to see them and pursue them.
  Having a holiday is a great opportunity to relax.
  The Court questioned the opportunity of introducing these measures in such an uncertain economic climate.