This technology has been pushed by some scientists as an alternative means of travelling around the solar system instead of conventional chemical fuels.
这项技术作为化学燃料的替代而广受科学家推崇。
Plus, eating fresh food means it probably spent less time travelling, which saves enormous amounts of oil and carbon dioxide emissions.
此外，吃新鲜食品意味着可能减少运输的时间，那是对石油和二氧化碳排放的减少的贡献。
That means that, if you were travelling at the speed of light the whole time, it would take 4.2 years to get there "- or about 50, 000 years using current rocket science."
这意味着，如果你以光的速度履旅行，到那需要4.2年，或者用现在的火箭科学需要50,000年。
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