Because we had to go there for the Rosetta scientific objectives very far away -- four times the distance of the Earth to the sun -- and also at a much higher velocity than we could achieve with fuel, because we'd have to take six times as much fuel as the whole spacecraft weighed.
저희는 지구에서 태양까지의 거리의 4배에 달하는 장거리를 항해해야 했으며 우주선 무게의 6배에 달하는 양의 연료를 필요로 하는 속도로 항해해야 했습니다.