bounded

1. 1.

   That can be enclosed within a ball of finite radius.

   可以被有限半径的球体包围的

2. 2.

   That contains a least element, a, and a greatest element, b, such that for all x ∈ X, a ≤ x ≤ b.

   包含最小元素a和最大元素b,使得对于所有x ∈ X,a ≤ x ≤ b

包含最小元素a和最大元素b,使得对于所有x ∈ X,a ≤ x ≤ b；有界限的

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