This is attractive because very little fuel is needed to land on an asteroid, and the journey is shorter than a trip to Mars.

这是有吸引力的，因为很少的燃料所需的土地上的一颗小行星，而短于一趟旅程到达火星。

youdao

But the satellites will arrive with less relative speed than spacecraft making the trip in three days, which means less fuel will be needed to brake and drop into lunar orbit.

但是相比太空飞船，卫星着陆时需要相对小的速度，这将需要三天的时间，意味着消耗更少的燃料进入绕月轨道。

youdao

However, getting enough antimatter for the 26 trillion-mile, one-way trip to Alpha Centauri and storing such a volatile fuel for long periods is prohibitively expensive and difficult.

然而，要到达26万亿英里之外的半人马座阿尔法星，携带和储存足够量的反物质难度极大，这种燃料不仅状态不稳定，而且耗资不菲。

youdao

He loaded the motorcycle with extra cans of fuel and water and began his trip across the desert.

VOA: special.2009.01.14

It is even for an average family taking a longer trip than just a work commute, you really are going to have to have transportation fuel."

VOA: standard.2009.09.02

The TaxiBot, though, uses just 20-30 litres of fuel for a typical trip.

ECONOMIST: A cheaper, cleaner way for the long taxi to the runway

Congestion tolling saves motorists an enormous amount of time that would otherwise be spent stuck in traffic, thereby reducing stress, saving fuel, and making trip times much more predictable.

CNN: Road tax alternative: Pay for each mile you drive

However, what has many US government and intelligence officials worried is a May, 2010 trip Lula took to Tehran where a nuclear fuel swap agreement was signed between Brazil, Turkey and Iran.

CENTERFORSECURITYPOLICY: The growing concern of Brazil & Iran