这在理论上肯定有风险，但在实践中却很少出问题。
This is certainly a theoretical risk but in practice there is seldom a problem.
其他替代方案在理论上很有吸引力，但在实践中要么不切实际，要么只能提供微不足道的改进。
The other alternatives are attractive in theory but in practice are either impractical or offer only marginal improvements.
虽然理论上可以只使用一个测试套件，但是在实践中这种情况难以管理。
While theory insists that working with only one test suite is possible, this is unmanageable in practice.
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