impact
英 ['ɪmpækt]
美[ɪm'pækt]
	    - vt. 影响;撞击;冲突;压紧
 - vi. 冲击;产生影响
 - n. 影响;效果;碰撞;冲击力
 
英英释意
- 1. the striking of one body against another
 
- 2. a forceful consequence; a strong effect;
 - "the book had an important impact on my thinking"
 - "the book packs a wallop"
 
- 3. influencing strongly;
 - "they resented the impingement of American values on European culture"
 
- 4. the violent interaction of individuals or groups entering into combat;
 - "the armies met in the shock of battle"