然后纵观国内外的研究进展，对旅游环境承载力的研究现状做出了一定的分析。
Then scanning the research of the tourism environment bearing capacity home and abroad, the author made certain analysis about it.
纵观国内外蛙人预警方面，对水下蛙人声学特性的研究显得尤为重要。
The research of acoustic characteristics from diver is critically important for the early warning of diver.
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