coalsack
coalsack漢語翻譯
coalsack詳細解釋
Coal.sack
n.(名詞)A dark nebula, one of the nearest to Earth, that appears in the southern Milky Way.煤袋:最接近地球的黑色星云之一,見于銀河系南部A similar dark nebula in the Northern Hemisphere near the constellation Cygnus.黑色星云:北半球接近天鵝座的一種類似黑色星云