为了清楚起见，您可以将内部类型标记为：

// Any set of three numbers
type MatrixRow = [number, number, number];
// Any set of three rows
type Matrix = [MatrixRow, MatrixRow, MatrixRow];

const exampleA: Matrix[] = [
    [
        [0,0,0],
        [1,1,1],
        [0,0,0],
    ], [
        [0,1,0],
        [0,1,0],
        [0,1,0],
    ]
];

const exampleB: Matrix[] = [];

您还可以为外部数组创建一个类型：

// A list of matrices
type MatrixSet = Matrix[];

const exampleC: MatrixSet = [];

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