rocket: n.火箭;火箭弹,火箭发动机;火箭式投射器;〔英俚〕斥责。 a carrier [freight] rocket 载运火箭。 an antitank rocket 反坦克火箭。 a moon rocket 月球火箭。 an outer-space rocket 外层空间宇宙[外太空]火箭。 a photon rocket 光子火箭。 a sounding rocket 探测
He said that current chemical and nuclear rockets were not adequate for taking colonists into space as they would mean a journey of 50 , 000 years 他指出,目前的化学和核子动力火箭均不足以载送移民者上太空,因为一趟旅程可能耗时五万年。