grain/ɡreɪn/名词细粒,颗粒grains of sand沙粒(照片、底片的)显影颗粒fine/coarse-grain film显影颗粒细(粗)的胶卷(木头和织物等的)纹理to cut something along/against the grain顺着纹理/横对着纹路切开某物想跟读,去练习