Those who do fly take an average of about two trips a year.
那些坐飞机旅行的人每年平均飞行两次。
In South Asia they take an average of four-and-a-half years.
而南亚国家的破产程序平均为四年半。
It would take an average global temperature rise of 6c to push Greenland into irreversible melting, the new study found.
最新的研究发现,只有全球平均气温上升6度,才会促使格陵兰冰原发生不可逆转的融化。
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