1.aviation 航空
The airline's biggest headache is the increase in the price of aviation fuel.
令航空公司最头疼的问题是航空燃料价格的上涨
。2.short hop 短途飞行
It's a short hop from London to Paris.
从伦敦到巴黎是短途飞行
。3.crack me up 让我捧腹不已,使我发笑
That comedian always cracks me up.
那个喜剧演员总是让我发笑
。4.meet the challenge 迎接挑战
It is known that pollution is a long-term problem, and no single government can meet the challenge alone.
众所周知,污染是一个长期问题,没有任何一个政府能够单独应对这个挑战
。5.altruism 利他主义
Volunteers are not motivated by self-interest, but by altruism.
志愿者们不是被自身利益而是被利他主义所推动
。