马蹄星云 Traditional 馬蹄星雲 Mǎ tí xīng yún 🔊 Omega or Horseshoe Nebula M17 + Keep this word Meanings Mǎ tí xīng yún name 馬蹄星雲 Omega or Horseshoe Nebula M17 Its characters 马mǎhorseHSK 3蹄tíhoof星xīngstar云yúncloudHSK 4