The wall acts as a barrier to entry.

这堵墙是入口的屏障.

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This poses a barrier to entry for rivals.

这对进入的对手构成一种障碍.

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Differentiation: This is the ultimate barrier to entry.

细分: 这是最终的进入障碍.

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A technical edge and customers'trust amounts to a formidable barrier to entry.

技术的边缘和客户的信任一起向进入者构成了难以跨越的障碍.

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