这种形式的问题通常是更深层次问题的症候。
This kind of issue is usually a symptom of a deeper problem.
我们希望，那些幸存下来的，和繁荣兴盛的形式，将能把人类文明带上一个更高的层次。
Those that survive and flourish should, we hope, raise civilization to a higher level.
生态旅游是一种新兴的较高层次的旅游形式。
Ecotourist development is the travel form of a kind of burgeoning higher level.
现实中的农业规模经济的表现形式是十分丰富的，规模效益表现为多种层次。
Reality agricultural scale economic is very rich, and has many kinds of levels.
现实中的农业规模经济的表现形式是十分丰富的，规模效益表现为多种层次。
Reality agricultural scale economic is very rich, and has many kinds of levels.
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