最后一组也同样在一个黑白交替的环境中，只不过晚上用昏暗的类似黄昏的灯光。
The remaining rodents were also exposed to a cycle, but the dark was replaced with a dim glow equivalent to the twilight at the first flickers of dawn.
别墅里的颜色呈现黑白交替的状态，同时允许一些物件与区域对比，其它物件与区域混合。
The colors in this home alternate from black and white while letting some pieces contrast with the area and others blend.
太阳乐此不疲地出现和消失，而由它所造成的黑白交替的时段，是首次被人们接受的时间。
The appearance and disappearance of the sun was even and unfailing. The periods of light and darkness it created were the first accepted periods of time.
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