You can write on the edge. I don't care.

你也可以写在边缘，我不在乎。

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Well, he would love to be fighting at the edge of the Grand Canyon, so that he doesn't have to worry about his right flank, but he's out there in the middle of a field.

如此一来他肯定会喜欢在大峡谷边上战斗,因为那样就不必担心右侧受到攻击,但当他在战场的中央

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Our t = 0, you have him right on top of this edge.

设 t = 0 时他正好在楼顶的边缘

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