n.
the leading units moving at the head of an army
同义词：van
any creative group active in the innovation and application of new concepts and techniques in a given field (especially in the arts)
同义词：avant-gardevannew wave
the position of greatest importance or advancement; the leading position in any movement or field
同义词：forefrontcutting edge
Reactions to vanguards: Advances in backlash theory.
Latin American vanguards : the art of contentious encounters
Vanguards and ventures: Projects as vehicles for corporate entrepreneurship
Vultures or Vanguards?: The Role of Litigation in Sovereign Debt Restructuring
Chapter four - Reactions to Vanguards: Advances in Backlash Theory
Chapter four–Reactions to Vanguards : Advances in Backlash Theory
MIDDLE MANAGERS: VICTIMS OR VANGUARDS OF THE ENTREPRENEURIAL MOVEMENT?
Vanguards of paradigm shift in radiation biology: radiation-induced adaptive and bystander responses.
High-density lipoproteins: multifunctional vanguards of the cardiovascular system
Identification of global marine hotspots: sentinels for change and vanguards for adaptation action
