unachievable

adj.impossible to achieve

同义词：unattainableundoableunrealizable

Responsiveness to EMT-performed basic CPR and its duration predict unachievable sustained return of spontaneous circulation and unav...
Bridging Cognition and Socioculturalism Within Conceptual Change Research: Unnecessary Foray or Unachievable Feat?
The failures of American and European climate policy : international norms, domestic politics, and unachievable commitments
The Failures of American and European Climate Policy: International Norms, Domestic Politics, and Unachievable Commitments – By Lor...
Automated feedback for unachievable high-level robot behaviors
Implementing agent teams in dynamic multiagent environments
Cass, Loren R. 2006. The Failures of American and European Climate Policy: International Norms, Domestic Politics, and Unachievable ...
Quantum cryptography: Public key distribution and coin tossing ☆
Orthogonal Packings in Two Dimensions.
Commitments and conventions: The foundation of coordination in multi-agent systems