Uncommonly severe droughts brought on by global climate changes have led to forest-eating wildfires from Australia to Indonesia, but nowhere more acutely than in the Amazon.
出自-2013年6月阅读原文
柯林斯高阶英汉双解学习词典释义
ADJ-GRADED
不平常的;罕见的
If you describe something as uncommon, you mean that it does not happen often or is not often seen.