反射星云 fǎnshèxīngyún reflection nebula Origin Definitions Defs Strokes Stroke Words Sentences Sents 反射 fǎnshè verbnoun to reflect To bounce back from a surface (of light, sound, heat, etc.)星云 星雲 xīngyún nebula A cloud of gas and dust in outer space visible in the night sky as an indistinct bright patch or as a dark silhouette