handily  
adverb uk/ˈhæn.dəl.i/ us/ˈhæn.dəl.i/
  (IN A USEFUL WAY)      
  方便地
in a useful or convenient way
  An additional power switch for the radio is handily located next to the steering wheel. 在方向盘旁边顺手的位置加装了一个收音机电源开关。 
   (EASILY)      
 US轻易地 
easily
  The New York Yankees handily defeated the Boston Red Sox. 纽约扬基队轻松击败了波士顿红袜队。