rough·age /ˈrʌfɪʤ/ 粗飼料,粗糧
rough·age /ˈrəfɪʤ/ 名詞 粗糧,(難消化的)纖維素食物,粗飼料,粗糙食物
roughage n : coarse food high in fiber but low in nutrients; its bulk stimulates peristalsis