马头星云 mǎtóuxīngyún Horsehead Nebula Definitions Defs Origin Strokes Stroke Words Sentences Sents 马头 馬頭 mǎtóu horse's head the head of a horse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
