raison d'etre

n.

存在的目的或理由；

Raison d'Etre
Raison d'etre
Raison d'etre
Oxygen carriers ("blood substitutes")--raison d'etre, chemistry, and some physiology.
The raison d'etre of secondary plant substances; these odd chemicals arose as a means of protecting plants from insects and now guid...
The EU Fundamental Rights Agency: Satellite or Guiding Star? Raison D'Etre, Tasks and Challenges of the EU's New Agency
Raison d'Etre: capturing design history and rationale in mutimedia narratives
Selfishness and death: raison d'etre of restriction, recombination and mitochondria.
The little genome of apicomplexan plastids: its raison d'etre and a possible explanation for the 'delayed death' phenomenon.
The Creative Studies Project: Raison D'Etre and Introduction.
The individual components of the metabolic syndrome: is there a raison d'etre?
Unconventional Monetary Policy Measures: Principles-Conditions-Raison d'etre
Perception of the Raison d'Etre in Anchored Instruction: An Ecological Psychology Perspective.