ultra light velocity的用法和样例：
例句
- Recently, the study of subluminal and superluminal light propagation has attracted a great deal of interest.
光速减慢和超光速的光脉冲传播研究成为量子光学中的热门课题。 - Especially for flat-spectrum compact radio sources,the milli-arcsecond components with apparent superluminal velocity are detected with high probability.
尤其是对平谱致密射电源中毫角秒尺度的子源，能以相当高的概率观测到它的视超光速现象。
