The colours of the rings are blue, yellow, black, green, and red respectively.
五环的颜色分别是蓝，黄，黑，绿和红色。
The five colors of the rings are mandatory blue, yellow, black, green and red.
环的五种颜色根据规定是蓝、黄、黑、绿和红。
The rings of upper row are, from left to right, blue, black and red.
上面那一行中三个球的颜色从左向右依次是蓝色、黑色和红色；
The rings of upper row are, from left to right, blue, black and red.
上面那一行中三个球的颜色从左向右依次是蓝色、黑色和红色；
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