What're those They have 3eyes,red ,yellow and green.Oh,they are __________________

问题描述:

What're those They have 3eyes,red ,yellow and green.Oh,they are __________________

traffic lights

What're those ?They have 3eyes,red ,yellow and green. Oh,they are ___traffic lights________

three-primary colours? 三原色
哦看到了3eyes,那应该是 traffic lights
我是老师,有问题可以交流~