tremulously       
adverb uk/ˈtrem.jə.ləs.li/ us/ˈtrem.jə.ləs.li/
 颤栗地,颤抖地
(of a person's voice or a part of their body) in a tremulous way (= shaking slightly), often because you are nervous or frightened
  She looked at her mother and grandmother and smiled tremulously. 她看着她的母亲和祖母,怯生生地笑了笑。 
 "Are you a vampire?" he asks tremulously at one point. “你是吸血鬼吗?”他曾颤抖着问道。 
 See: tremulous
 - More examples
 - Her lip trembled as she spoke tremulously.
 - "Is that really you?" he called tremulously.
 - Looking up tremulously, he found himself staring into the Princess's face.