oestrogen

(also esp US estrogen / 5es-; `Zs-/) n [U, C] any of a group of female sex hormones, produced by the ovaries, which develop and maintain the characteristic features of the female body, eg large breasts, and prepare the body for pregnancy 雌激素: an oestrogen deficiency 雌激素缺乏. Cf 参看 progesterone.

oddly, oddment, oddness, odds, odds-on, ode, odious, odiousness, odium, odometer, odor, odorous, odour, odour (US odor), odourless, odyssey, OECD, oecumenical, Oedipus complex, oesophagus (also esp US esophagus), of, of all time, of course, of importance, of itself, of late years, of necessity, of one's own, of the moment, of...importance, of...interest, of...value, off, off and on, off balance, off chance, off duty, off of, off(-), off-beat,