We substituted red balls for blue to see if the baby would notice.
我们用红球代替篮球，观察婴儿是否注意到它们的区别。
So we can build a machine that could sort red balls from blue balls.
我们就能制造一台，可以分辨红球和蓝球的机器。
We substituted red balls for blue to see if the babies would notice.
我们用红球替代蓝球，观察婴儿是都注意他们的区别。
Dragon fruit. Fiery red, look like fire balls!
龙珠果。红彤彤的，好像火球！
There are four balls. One of them is red.
有四个球。一个是红色的。
Red and yellow balls mean Mars and Sun, respectively.
蓝色代表地球，红色和黄色代表火星和太阳。
Red and yellow balls mean Mars and Sun, respectively.
蓝色代表地球，红色和黄色代表火星和太阳。
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