The aviation bomb is flying in the high density atmosphere layer. Its fight Mach number is generally 0.9.
航弹主要是在稠密的大气层中飞行，巡航马赫数一般在0.9附近。
The pilot jibbed at the idea of a straight bomb run, for it would mean flying through heavy flak.
领航员不赞成采用笔直的轰炸航线，因为这样做就得飞过密集的高射炮火。
Bill: Yes, you did and I'm green with envy. Flying First Class around the world must have cost a bomb?
比尔：你有啊，我很羡慕。坐头等舱去环游世界一定花很多钱吧？
Bill: Yes, you did and I'm green with envy. Flying First Class around the world must have cost a bomb?
比尔：你有啊，我很羡慕。坐头等舱去环游世界一定花很多钱吧？
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