manned trip造句

例句与造句

1. Only when a great deal more information has been obtained, will it be possible to plan a manned trip to mars .
   只有在获得大量资料后，才有可能筹划载人的火星之行。
2. Fuel - cell cars , in contrast , are expected on about the same schedule as nasa ' s manned trip to mars and have about the same level of likelihood
   相对之下，燃料电池车的进度，预料还跟美国航太总署（ nasa ）的载人上火星之旅相去不远，实现的可能性还高不了多少。
3. It's difficult to find manned trip in a sentence. 用manned trip造句挺难的