transitionedv.转变transitionn.转变；过渡transition amplitude转换振幅transition criterion过渡准则transition radiation跃迁辐射transitional segment过渡段transition frequency交叉频率,过渡频率,交界频率,跃迁频率transition linewidth跃迁谱线宽度transitional denture过渡牙托, 过渡性义齿transition - metal过渡金属transitional statute过渡性法规transition structrue过渡结构

1. The corona's rays flash out in a brilliant fan that has wispy spike-like rays near the Sun's north and south poles.
   光环带的光束像一把流光折扇，在太阳的南北两极附近形成纤细的辐射线。
2. The rays appeared to destroy the fast-growing cells of terrible growths in the body.
   辐射线似乎能破坏人体内迅速增长的恶性肿瘤细胞。