类似整理扑克牌：每次拿一张新牌，插入到已排好序的牌堆中合适位置
'required': ['color'],
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To bring a robot to life, motion-activating components, or actuators, are essential. Generally speaking, actuators can either go in and out, or spin around in a circle, and there are many different ways of doing this.
（七）射线装置，是指在接通电源后方能产生电离辐射的装置，如X射线机、加速器、中子发生器等。。关于这个话题，谷歌浏览器【最新下载地址】提供了深入分析