设在乡镇（街道）的司法所协助县级人民政府行政执法监督机构依法开展行政执法监督工作。
The same decomposition works in higher dimensions. For NNN random points on a sphere, the probability they all lie in a hemisphere is also N/2N−1N / 2^{N-1}N/2N−1. The argument is identical: anchor a hemisphere at each point, observe that each event has probability 1/2N−11/2^{N-1}1/2N−1, and verify that at most one anchor can work (the complementary cap is at least a full hemisphere, so no other anchor's hemisphere can straddle it). TODO: If I figure out how to add 3d visualizations to this website, I'll cover the 3D case
，这一点在PDF资料中也有详细论述
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That's what I mean when I say that pg (who, by the way, actually wrote that passage about Cambridge and New York) "gets mileage" out of the phrase: he takes advantage of the fact that it so often accompanies real, simple, occasionally hard-won neutral observations.