It was a collaboration that produced extremely useful results.
这是一次带来极其有益的成果的合作。
Anything that can increase farming efficiency—the amount of crops we can produce per acre of land—will be extremely useful.
任何能提高农业效率的东西——能提高我们每英亩土地生产的农作物数量的东西——都是非常有用的。
This is extremely useful, because there are objects that can't be seen, objects that we wouldn't even know without radio telescopes.
这是非常有用的，因为有些物体是看不见的，如果没有射电望远镜我们甚至不知道这些物体。
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