plethora
noun /ˈpleθərə/
  /ˈpleθərə/
[singular] (formal)- an amount that is greater than is needed or can be used过多;过量;过剩 - The report contained a plethora of detail.报告中细节过多。 
 词源mid 16th cent. (in the medical sense): via late Latin from Greek plēthōrē, from plēthein ‘be full’.
- The report contained a plethora of detail.