impracticability

n.

无法实施，不能实施的事项；

Impracticability
Impracticability
Impossibility, Impracticability, and Frustration
Commercial impracticability in contract law: An economic analysis
Commercial impracticability in contract law: An economic analysis ☆
Impracticability of informed consent in the Registry of the Canadian Stroke Network
The Doctrine of Commercial Impracticability in a Second-Best World
Impracticability of Informed Consent in the Registry of the Canadian Stroke Network — NEJM
POTASSIUM THIOCYANATE IN THE TREATMENT OF ESSENTIAL HYPERTENSION: ITS IMPRACTICABILITY
Contractual Allocations of Unknown Risks: A Critique of the Doctrine of Commercial Impracticability