岩石物质从地球内部的裂缝处向上流动，迫使海底向两边分开，为新的岩石物质腾出空间。
The rock material flows up from Earth's interior here, at the split, which forces the two sides of the ocean floor to spread apart, to make room for the new rock material.
在极度贫困的国家更是如此，那里的农村居民在每个生长季节都要砍伐和烧毁森林，来为农业腾出空间。
This is especially so in desperately poor countries, where residents in the countryside slash and burn forests each growing season to clear space for farming.
这要等到IAF拿到用于建飞行员宿舍的合适土地后才能完成。 这些宿舍将被推平以便为规划的新设施腾出空间。
This can only be done once the IAF obtains suitable land for construction of housing for airmen, presumably to replace accommodation that will be demolished to make room for the planned new complex.
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