其中的一个就是二轮机器人，在一段距离以外的使用者可以通过电池供电的耳机发出指令，无线遥控机器人。
One is a two-wheeled robot that can be moved forward by a user standing at a distance, who wears a battery-powered headset that transmits signals wirelessly.
以这种方式拉近地理距离，让传送买卖指令的时间缩短了数毫秒。
Reducing geographical distance in this way cuts milliseconds off the time it takes for buy or sell messages to be sent into or back from an exchange.
这个指令的基本意思是当在 Flex 画布上布置图像时，它将受到这样的限制：它与画布右侧边缘之间的距离为 0。
This instruction basically means that whenever image is laid out in Flex's canvas, it will have a constraint that its distance from the canvas right edge should be zero.
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