bur·den·some /ˈbɝdṇsəm/
  (a.)累贅的,惱人的,艱難的
  Bur·den·some a. Grievous to be borne; causing uneasiness or fatigue; oppressive.
  The debt immense of endless gratitude
  So burdensome.   --Milton.
  Syn: -- Heavy; weighty; cumbersome; onerous; grievous; oppressive; troublesome.
  --  Bur*den*some*ly, adv. -- Bur*den*some*ness, n.
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  burdensome
       adj : not easily borne; wearing; "the burdensome task of preparing
             the income tax return"; "my duties weren't onerous; I
             only had to greet the guests"; "a taxing schedule"
             [syn: onerous, taxing]