在第一批载人火箭开始飞行之前，西拉诺已经死了，且已被掩埋了整整三个世纪。
Cyrano was dead and buried for a good three centuries before the first manned rockets started to fly.
19世纪90年代，劳伦斯·哈格雷夫发明了盒子风筝来测试有关飞行的想法。
In the 1890s, Lawrence Hargrave invented the box kite to test ideas about flight.
搭乘超音速飞机飞行会成为21世纪常见的旅行方式。
Supersonic flight could become a routine form of travel in the 21st century.
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