a shapeless sweater的用法和样例：
- Although she has a shapely figure, she is wearing a shapeless coat.
- He pulled a red sweater on over his shirt.
- She came back and slipped on a new sweater.
- Mr Samuelson's book squeezed a shapeless body of economic knowledge into a tight corset.
- But a shapeless pigmy that walks asleep in the mist searching for its own awakening.