The American and Japanese navies took the lead in the development of naval aviation...美国和日本海军是发展海军航空部队的佼佼者。The Wright brothers pioneered in early aviation.莱特兄弟是早期航空的先驱.The Gossamer Conder, a human - powered airplane, fle...
A small group of youths stayed behind to heckle and shout abuse.一小群小青年没走，在起哄、叫骂。Crowds of youths prevented the fire service from dealing with the blaze.成群结队的小青年阻拦消防部门灭火。Underage youths can obtain alcohol from their older...
Many women achievers appear to pose a threat to their male colleagues...许多事业有成的女性似乎对她们的男同事构成了一种威胁。The skills and logistics of getting such a big show on the road pose enormous practical problems.搞如此大型的巡演，无论是技术上还是物流上都面临着巨...