This rotation that has been found allows us to forward in understanding the Earth's magnetic field.
已经有的这个旋转使得我们能进一步理解地球的磁场.
来源:网络文摘精选As the magma moves through cracks in the Earth's surface it cools around the edges.
岩浆可以在地球表面的火山岩看到,构成了一系列混合的化学物质.
来源:网络文摘精选Deep beneath the Earth's crust there are pockets of partially liquid rock called magma.
在地壳的深处有很多异体囊,囊中有半液态的岩叫作岩浆.
来源:网络文摘精选People endlessly overdevelop Earth's resources through agriculture, fishing, hunting and tourism.
人们正在通过农业 、 捕捞 、 打猎和旅游在没完没了地过度开发地球资源.
来源:互联网摘选Until now, we have only explored the Earth's outer layer, the crust.
迄今为止, 人类的探测范围也只是局限在地球的表层, 也就是地壳.
来源:互联网摘选Because that matches Earth's rotation period, it is known as a geosynchronous orbit.
因为相对于地球的自转周期, 这就是一个同步轨道.
来源:网络文摘精选A long, broad elevation that slopes gently from the earth's surface or the ocean floor.
斜坡:从地球表面或海底缓缓倾斜的长而宽的高地.
来源:网络文摘精选Which do not pollute the air, so Earth's temperature will not increase.
哪一不污染空气, 因此地球的温度将不增加.
来源:网络文摘精选Earth's Polar Regions are signaling us that something unusual is happening.
极地地区的现象告诉我们,一些不正常的事正在发生.
来源:互联网摘选Planetary perturbations make the earth's orbit about the sun irregular.
行星的摄动使得地球绕太阳的轨道是不规则的.
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