unnatural [ʌnˈnætʃərəl]

例句:

• I consider activities such as jogging and weightlifting as unnatural.
  我认为像慢跑、举重这样的运动不符合自然规律。
  
• Genetic engineering is often presented as producing unnatural hybrids.
  来自Guardian
• She gave him a bright, determined smile which seemed unnatural.
  她对他开朗、坚定地一笑，但笑得有点不自然。
  
• The aircraft rose with unnatural speed on take-off.
  那架飞机以反常的速度起飞升空。
  
• So the patenting process is what makes them unnatural?
  来自SA
• Conscious thinking is an unnatural use of the brain.
  来自SA