乘公共汽车旅行虽然没有乘飞机那么快,也没有乘火车那么舒适,但是很容易,也很便宜方便。
To travel by bus is easy, cheap and convenient, though not so fast as travelling by plane or so comfortable as by train.
制造商实际是可以生产处快的飞机,可是除了军用以外并没有太多的需求。
Manufacturers are technically capable of producing faster planes, but there isn't much demand for them outside of the military.
当超音速飞机在这周的航空展上出现时,他们的飞行速度比一般的喷气式飞机快25%。
As for the supersonic planes introduced at this week's air show-they fly more than 25 percent faster than the average jetliner.
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