Since testing every value is impractical, a few values should be chosen from each equivalence class. An equivalence class is a set of values that should all be treated the same.
既然要测遍每一个值是不可能的，那么应该在每个定价类中选取几个值。一个定价类就是一个被认为是类似值的集合。
Since testing every value is impractical, a few values should be chosen from each equivalence class. An equivalence class is a set of values that should all be treated the same.
既然要测遍每一个值是不可能的，那么应该在每个定价类中选取几个值。一个定价类就是一个被认为是类似值的集合。
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