R.E.

名词 r.e.:

1. a rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum
   同义词：rhenium, Re, atomic number 75
2. ancient Egyptian sun god with the head of a hawk; a universal creator; he merged with the god Amen as Amen-Ra to become the king of the gods
   同义词：Ra, Re
3. the syllable naming the second (supertonic) note of any major scale in solmization
   同义词：re, ray