But UAVs' growing complexity could make them as expensive as manned planes.(但是無人機不斷出現(xiàn)的復雜性讓它的建造成本與人工飛機一樣昂貴。)

Otto Lilienthal soars above a crowd in one of his manned gliders in an 1893 photograph.(這是1893年的一張照片，奧特·李林塔爾乘著他的載人飛行器翱翔在人群上空。)

That is why I'm in favour of manned, or should I say 'personed', space flight.(這就是為什么我對載人，或個人的太空飛行感興趣“。)

The last manned mission to the moon was Apollo 17, in 1972.(1972年，阿波羅17號執(zhí)行的最后一次載人登月任務成為絕響。)

That was why he is favour of manned space flight, he said.(他說這也就是他贊成進行載人航天飛行的原因。)

China successfully launched its first manned spacecraft.(中國首次載人航天飛行取得圓滿成功。)

I think that would have to be a manned mission to Mars.(我覺得肯定是載人火星任務。)

Thereafter, the impetus for manned flight was lost.(從那以后，載人飛行的動力就消失了。)

The Apollo 11 mission was the first manned mission to land on the Moon.(阿波羅11的任務是第一次載人飛行登月任務。)

Cyrano was dead and buried for a good three centuries before the first manned rockets started to fly.(在第一批載人火箭開始飛行之前，西拉諾已經(jīng)死了，且已被掩埋了整整三個世紀。)