undulatory ['ʌndjələˌtoʊrɪ]

例句:

• The undulatory pectoral fin motion diagnostic to this taxon is known as rajiform locomotion.
  来自BBC
• Such is the undulatory nature of the movement of opposites in all things.
  这是事物矛盾运动的曲折性.
  
• The first part of the thesis has expounded the cycle undulatory theory and financial early - warning theory.
  本文第一部分对周期波动理论和预警理论进行了阐述.
  
• The undulatory biomimetic propulsor is a new underwater propulsor which swimming mode of Gymnarchus Niloticus.
  波动仿生推进器是以“尼罗河魔鬼”为仿生对象设计的新型水下推进装置.