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Sex ratio ['seks'reɪʃɪəu]
pharma.	Razón de sexos
sex ratio ['seks'reɪʃɪəu]
demogr.	razón de masculinidad; proporción de sexos
ichtyol.	proporción sexual
med.	proporción de sexo; sex ratio
stat., social.sc.	razón de sexos

Sex ratio: 4 phrases in 2 subjects

Health care	2
Statistics	2