资料来源 : pyDict

沈著,泰然自若,垂直

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Aplomb \A`plomb"\, n. [F., lit. perpendicularity; ? to + plomb
   lead. See {Plumb}.]
   Assurance of manner or of action; self-possession.

资料来源 : WordNet®

aplomb
     n : great coolness and composure under strain; "keep your cool"
         [syn: {assuredness}, {cool}, {poise}, {sang-froid}]