bear populations翻译

bear populations的基本解释

读音: 美: 英:

熊种群：指在某一特定地区内的熊的总体数量。

例句

Modern methods for tracking polar bear populations have been employed only since the mid-1980s, and are expensive to perform consistently over a large area.跟踪北极能种群的现代方法仅在20世纪80年代中期才被采用，而且，要在大范围内连续采用这种方法，其代价非常高昂。
Furthermore, brown bear populations have dropped as much as 50 percent in the last 15 years.此外，过去15年中，棕熊种群数量下降高达50%。
Other polar bear populations could survive beyond that date but many of those could be gone by 2100, Amstrup said.阿姆斯特拉普说，其他的北极熊会活过2050年，但这些活下来的熊中许多不会活过2100年。
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