impracticability
無法實施,不能實施的事項
Im·prac·ti·ca·bil·i·ty n.; pl. Impracticabilities
1. The state or quality of being impracticable; infeasibility.
2. An impracticable thing.
3. Intractableness; stubbornness.
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impracticability
n : the quality of not being usable [syn: impracticableness]
[ant: practicability, practicability]