unenthusiastically       
adverb uk/ˌʌn.ɪn.θjuː.ziˈæs.tɪk.li/ us/ˌʌn.ɪn.θuː.ziˈæs.tɪk.li/
 不热心地;缺乏热情地;不热烈地
in a way that shows little or no enthusiasm
  She nibbled the toast unenthusiastically. 她毫无热情地一点一点吃着吐司。 
 "I'm sure it will be lovely," she said, unenthusiastically.  “我肯定它会很好吃的,”她冷淡地说。 
 - More examples
 - He supported the war, but he did so unenthusiastically.
 - They'll do their jobs, however unenthusiastically.
 - The work was respectfully but unenthusiastically described as "interesting''.
 - The market reacted unenthusiastically to the deal.