Ullman

Allen , and the itevation by J . D . Ullman.

Ullman等提出的迭代方法.

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I reprinted a short essay on youth by Samuel Ullman, an author unknown to me.

我转载了一篇论青春的短文, 其作者塞缪尔?厄尔曼,我并不熟悉.

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