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further back in time 强调
考古学	раньше (He reacted to a recent report that archaeologists found wood structures from before Homo sapiens were said to exist in Zambia, Africa, from around 476,000 years ago. Mainstream scientists had previously estimated that humans like us first appeared 300,000 years ago, though Cremo believes they existed much further back in time. -- гораздо раньше coasttocoastam.com ART Vancouver)
far back in time
商业活动	ретроспективно (Alexander Matytsin)