[ˌfəutəuˈelimənt]
光元素：一种在光的作用下分解并产生光电的流电元素- Arlt's recess,trachoma
- arm
- armadillo
- armamentarium
- Armanni-Ebstein cells,kidney,lesion(degen-eration)
- armarium
- armature
- A.R.M.H.
- Armigeres
- Armillifer
- Armophorina
- armpit
- Arnaldus de Villanova
- Arndt's law,Arndt-Schulz law
- Arneth's count (classification,formula,in-dex)
- Arnica
- arnica
- A.R.N.M.D.
- Arnold-Chiari deformity(malformation,syndrome)
- Arnold of Villanova,Arnaldus de Villanova
- Arnold's bodies
- Arnold's canal,etc.
- arnotto
- A.R.O.
- AROA