oestrogen [ˈɛstrədʒən]

例句:

• If the egg is not fertilised oestrogen and progesterone decrease.
  如果卵细胞没有受精，雌激素和黄体荷尔蒙就会下降。
  
• Oestrogen is a female sex hormone.
  雌激素是一种雌性荷尔蒙。
  
• But during pregnancy, oestrogen and progesterone levels soar.
  来自BBC
• As ovulation gets nearer, oestrogen levels rise.
  临近排卵期，雌激素的分泌量随之增加。
  
• One factor is declining oestrogen levels after the menopause.
  来自BBC
• This is more noticeable after the menopause, when oestrogen levels fall.
  来自BBC