Think of Mars as the planet that supplies the high-energyfuel for your rocket.
把火星看作为你的火箭提供高能量燃油的行星。
2
However, it requires that lasers of high pulse energies are used; just as with spark plugs, a great deal of energy is needed to cause ignition of the fuel.
然而，这就要求使用高脉冲能量的激光器；与火花塞一样，需要大量的能量来引燃燃料。
3
Highenergy prices and environmental concerns will also contribute to fuel cell commercialization activity and market gains.