The report reflected the fact that since 2001, scientists have become more certain that humans are responsible for a large part of global warming. Otherwise, though, this report had a definite sense of déjà vu .
报告反映了这一事实，即，从2001年以来科学家们更为确信人类要对全球气候变暖的一大部分负责。除此之外，这一报告给人以似曾相识的感觉。有关气温升高、热浪以及寒流的估计几乎和六年以前提出的报告相似。