单词	副状态
释义	副状态costate
随便看	downfaulting down feather down feather) down feather (or downy down feather (or downy-- plumule) down feather (or downy; plumule) down feather--plumula down feather; plumule; downy down feather)--plumule (or downy down feed downfield down-fired boiler down floading point down flow down-flow downflow down-flow fraction down-flow--fraction downflow fraction downflow reactor downflue boiler down fold downfold downforce down for the count