We take a triangular grid, where velocity and position parameters of each grid-point must be given.

对于井间断面采用三角形剖分，并给定单元节点的速度和位置参数；

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Left: the robot turns left 90 degrees and remains on the current grid point.

左：机器人向左旋转90度，并保持原先所在的格网位置不变。

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An instruction to move "off" the world from a grid point from which a robot has been previously lost is simply ignored by the current robot.

如果有一条指令企图让机器人从一个格网坐标移出世界，然而之前已经有机器人从该坐标移出并损失，那么这条指令就应被忽略。

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Unlike traditional "centralized" systems, distributed energy relies on small power-generating technologies like solar panels or ultra-efficient natural-gas turbines built near the point of energy consumption to supplement or displace grid-distributed electricity.

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Grid architectures are designed to work around single-point failures, but in the 1989 event there were 15 major failures in a few seconds across the regional grid, and that was more than the system could cope with.

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Section 248 leaves the responsibility of securing the power grid in the hands of the same owner-operators who have failed to harden their networks up to this point.

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