Tiān / wén / xué / jiā / cháng / yòng / Méi / shì / biān / hào / lái / biāo / jì / yì / xiē / zhù / míng / de / shēn / kōng / tiān / tǐ

天文学家常用梅氏编号来标记一些著名的深空天体。

Astronomers often use Messier numbers to identify well-known deep-sky objects.