tremulously
  (ad.)發抖地;膽小地
  Trem·u·lous a.
  1. Shaking; shivering; quivering; as, a tremulous limb; a tremulous motion of the hand or the lips; the tremulous leaf of the poplar.
  2. Affected with fear or timidity; trembling.
     The tender, tremulous Christian.   --Dr. H. More.
  -- Trem*u*lous*ly, adv. -- Trem*u*lous*ness, n.
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  tremulously
       adv : in a tremulous manner; "the leaves rustled tremulously in
             the wind"