Age is an integer, and must be non-negative.

年龄是整数，并且必须是非负数。

youdao

This means that it is the responsibility of the calling function to ensure that only non-negative arguments are passed.

这意味着调用函数的职责是确保只传递非负参数。

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Non-negative matrix factorization has non-negative and local characteristics, and it is a new feature extraction method.

非负矩阵分解具有非负性和局部性的特点，是一种新型的特征提取方法。

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But the team's invitiation was withdrawn when the Italian tested non-negative for cocaine.

BBC: Gilberto Simoni

The Italian team had been due to compete before team leader Gilberto Simoni was handed a ban for testing non-negative for cocaine.

BBC: Saeco

The key work variable is zero-sum vs. non-zero sum (both negative-sum and positive-sum).

FORBES: The Fundamental 2x2 of Capitalism