Instrumental records do not go back far enough to provide us with reliable measurements of global climatic variability on timescales longer than a century.
仪器上记录的年代不够久远，因而无法可靠地提供一个世纪以前全球气候变化的测量值。
Meanwhile, global temperatures in recent months have been at their highest levels in records that go back 130 years.
其间，全球气温在最近几个月已经达到有记录的130年来最高水平。
Meanwhile, global temperatures in recent months have been at their highest levels in records that go back 130 years.
其间，全球气温在最近几个月已经达到有记录的130年来最高水平。
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