Dr Mayer knew from previous research that the early universe was awash with massive protogalaxies that would occasionally merge with each other.

迈耶博士从以往研究中发现宇宙早期与偶尔合并的大规模原星系相斥。

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Dr Bartels and Dr Pizarro knew from previous research that around 90% of people refuse the utilitarian act of killing one individual to save five.

Bartels博士和Pizarro博士从之前的研究中得知有90%的人不会选择这种实用主义的行为，牺牲一个救五个。

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The theory marks a change in approach from previous research which looked into using expensive military Star Wars-style lasers to destroy space junk.

这套理论改变了我们以往关于清理太空垃圾的看法，以前的研究倾向于运用昂贵的军事激光去摧毁太空垃圾。

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"From previous research we know that a third of children who are underweight present with life-threatening features, " he added.

BBC: Doctors 'miss' underweight children, UCL study suggests

Dr Alan Johnson, of the Public Health Laboratory Service's antibiotic resistance monitoring and reference laboratory, said the study confirmed data from previous research.

BBC: Nursery

The study supported findings from previous research showing that animals that approach the front of the cage when a visitor nears have a much greater chance of being placed in a new home.

WSJ: How People Pick a Pet at a Shelter