libido [lɪˈbi:doʊ]

例句:

• A flagging libido and a drop in sexual performance are all part of the ageing process.
  性欲减退，性功能下降，这些都是衰老过程的一部分。
  
• Lack of sleep is a major factor in loss of libido.
  睡眠不足是导致性欲丧失的一个主要因素。
  
• Libido is an expression taken from the theory of the emotions.
  力比多是从情绪理论中借用来的一个语词.
  
• Infertility and lack of libido are also common.
  来自BBC
• Sexual problems, including pain and decreased libido.
  来自BBC
• Different brands can also be mixed to minimise side-effects and improve libido.
  来自THETIMES