occasion
英 [ə'keɪʒ(ə)n]
美[ə'keʒn]
	    - n. 时机,机会;场合;理由
 - vt. 引起,惹起
 
英英释意
- 1. an event that occurs at a critical time;
 - "at such junctures he always had an impulse to leave"
 - "it was needed only on special occasions"
 
- 2. a vaguely specified social event;
 - "the party was quite an affair"
 - "an occasion arranged to honor the president"
 - "a seemingly endless round of social functions"
 
- 3. reason;
 - "there was no occasion for complaint"
 
- 4. the time of a particular event;
 - "on the occasion of his 60th birthday"
 
- 5. an opportunity to do something;
 - "there was never an occasion for her to demonstrate her skill"