但是公版的 self.instance_bank.cache（）函数的写法会引入工具链只能在 CPU 上支持的 ScatterND 算子和 Cast 算子，所以这里需要对代码做两处适配。
Six possible effects of Trump's climate policy change
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The ProblemHow densely can identical spheres be packed in n-dimensional space? In one dimension, the problem is trivial, and in two dimensions, elementary proofs have existed for decades. In three dimensions, a solution was conjectured by Kepler in 1611, but it was not proved until Thomas Hales settled it in 1998, in a heavily computer-assisted proof that subsequently took over a decade to formally verify.