descents

例句:

• But it is more important not to think lies, or to slide into those mechanical and untruthful habits of thought which are so pleasant and so easy as descents to mental ineptitude.
  但是更重要的是不去想谎言, 也不陷入无意识的、不诚实的思维习惯,这种思维习惯如此他令人惬意和自在,就象沦为智力低能一样.
  
• On the descents, cyclists spin past cars, freewheeling downhill at tremendous speed.
  在坡道上，自行车手飞驰着超越了一辆辆汽车，靠着惯性一路疾冲下山。
  
• The enemy will not have strength to repeat such descents often.
  敌人没有经常进行这种空降的力量.
  
• Murray Mk II had greater mental resilience, fewer descents into self-recrimination, stronger powers of concentration.
  来自BBC