和一些鸟不一样,这种鸟不 垂直向下飞。
但我认为这是个似是而非的建议,因为,当然,你可能只是坐飞机向上飞,并安全地向下看,就会有这些迷人的视野。
But I think this is rather an implausible suggestion because, of course, you could have these glorious views just by going up in the airplane and looking down from the safety of your airplane.
蝙蝠的翼是演化过程中由前肢演化而来。除拇指外,前肢各指极度伸长,有一片飞膜从前臂、上臂向下与体侧相连直至下肢的踝部。
Their wings are evolutionary modification of the forelimbs, with greatly elongated fingers joined by a membrane that extends down the side of the body.
But I think this is rather an implausible suggestion because, of course, you could have these glorious views just by going up in the airplane and looking down from the safety of your airplane.
但我认为这是个似是而非的建议,因为,当然,你可能只是坐飞机向上飞,并安全地向下看,就会有这些迷人的视野。
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