/ˈɪmpækt/1
- the action of one object coming forcibly into contact with another撞击, 碰撞, 冲击：
there was the sound of a third impact
传来了第三次撞击的声音
mass noun bullets which expand and cause devastating injury on impact.击中时会膨胀造成致命伤的子弹。
1.1
- the effect or influence of one person, thing, or action, on another效果, 影响：
our regional measures have had a significant impact on unemployment.
我们地区的措施对失业有重大影响。
/ɪmˈpækt/
1
- no obj. come into forcible contact with another object撞击; 冲撞：
the shell impacted twenty yards away.
炮弹在20码外冲撞落地。
1.1
- with obj. chiefly N. Amer. come into forcible contact with〈主北美〉碰撞, 冲击, 撞击：
an asteroid impacted the earth some 60 million years ago.
大约6,000万年前一颗小行星撞击了地球。
1.2
- have a strong effect产生强烈影响：
high interest rates have impacted on retail spending
高利率对零售消费产生了剧烈的影响
with obj. the move is not expected to impact the company's employees.预计这一行动对公司职员不会产生什么巨大的影响。
2
- with obj. press firmly紧压：
the animals' feet do not impact and damage the soil as cows' hooves do.
这种动物的脚不像牛蹄那样紧踏与破坏土壤。
USAGE
The phrasal verb impact on, as in when produce is lost， it always impacts on the bottom line， has been in the language since the 1960s. Many people disapprove of it， despite its relative frequency， saying that make an impact on or other equivalent wordings should be used instead. This may be partly because， in general， new formations of verbs from nouns （as in the case of impact） are regarded as somehow inferior; in addition， since the use of impact is associated with business and commercial writing， it has the unenviable status of 'jargon'， which makes it doubly disliked.
词源
early 17th cent. （as a verb in the sense 'press closely， fix firmly'）： from Latin impact- 'driven in'， from the verb impingere （see IMPINGE）.