irruption
[ɪ'rʌpʃən]
	    - n. 闯入,侵入;激剧繁殖
 
英英释意
- 1. a sudden violent entrance; a bursting in;
 - "the recent irruption of bad manners"
 
- 2. a sudden sharp increase in the relative numbers of a population
 
- 3. a sudden violent spontaneous occurrence (usually of some undesirable condition);
 - "the outbreak of hostilities"