在这项研究中，研究人员给老鼠喂食干奶粉，这些奶粉是由韩国首尔的研究人员在白天和晚上分别从奶牛身上挤奶制成的。
In the study, mice were fed with dried milk powder made from cows milked both during the day and at night by researchers from Seoul, South Korea.
“罗老”号二级火箭的第一级由俄罗斯设计并建造，第二级由韩国负责。
The first stage of the two-stage Naro rocket was designed and built by Russia and the second by South Korea.
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