The mix of humic acid with diffusion agent N have good effect too.

当采用扩散剂N时，与腐殖酸混合使用效果也较好。

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"The satisfaction rate in this particular region is the greatest of any geographical area, " says Fran Kramer, an agent at Rochester, N.

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The son of a nurse and an insurance agent in Minot, N.

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France considers itself an "agent" of the United Nations where necessary, but often works behind the scenes to influence U.N. decisions.

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