n. 光线, 射线, 闪烁, 光辉

vi. 射出光线, 浮现, 放射光线

vt. 放射, 显出

n. a branch of an umbel or an umbelliform inflorescence

n. (mathematics) a straight line extending from a point

n. any of the stiff bony spines in the fin of a fish

n. cartilaginous fishes having horizontally flattened bodies and enlarged winglike pectoral fins with gills on the underside; most swim by moving the pectoral fins