Narrow beams of light or other radiation

• Lines of sunshine streaming from a source

狭窄的光束或其他辐射束

• 从某一源头射出的阳光线束

Flat cartilaginous fishes with winglike pectoral fins, related to sharks

扁平的软骨鱼，胸鳍宽大如翼，与鲨鱼同类

He/she/it emits light or radiation

• He/she/it exposes something to radiation

他/她/它发出光或辐射

• 他/她/它使某物受到辐射