As they travel inland at speeds in excess of 60 feet a year, they merge with the rich grass and scattered trees of the savanna.
它们以每年超过60英尺的速度向内地迁移，融入了热带稀树大草原的丰富草地和零星的树木。
All wolves have feet superbly adapted to long-distance travel over different types of terrain and through (and over!) snow.
所有狼的脚都和他们的长距离远行，不同类型的地段以及走过雪地是相适应的。
In testing, the Jetpack could travel at 60 miles per hour for up to 30 miles, and as high as 7, 800 feet using a gas engine and two ducted fans.
在测试中，喷气设备可以60英里每小时的速度飞行30英里，通过一个气体引擎和两个管道风扇，可以上升到7,800英尺的高度。
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