protein /ˈprəuti:n/ n. ［u］蛋白质：animal (vegetable) protein 动(植)物蛋白 Protein digests slowly. 蛋白质消化慢。The food contains a lot of protein and vitamin, and helps to build up our bodies.这个食品含有丰富的蛋白质和维生素，有助于强身健体。