propagation

• 名词，指传播、扩散或传递某事物的行为，如思想、生物或物理波的传播；也指繁殖、增殖。

A noun referring to the act of spreading, multiplying, or transmitting something, such as ideas, organisms, or physical waves.

不可数

1. Spreading of ideas or practicesB2formal

   The act of spreading something, such as a belief, custom, or practice, into new areas or among more people.

   思想或实践的传播

   • The propagation of democratic ideals has been a long process.
   • Missionaries were often involved in the propagation of their religion.
   • The internet has accelerated the propagation of new trends.

   同义词broadcastingcirculationcommunicationdiffusiondisseminationpromotionpromulgationspreadtransmission

2. Reproduction or multiplicationB2formalscientific

   The act of producing offspring or multiplying by such production, especially in plants or animals.

   繁殖

   • The propagation of the species is essential for survival.
   • Gardeners use cuttings for the propagation of many plants.
   • The study focused on the propagation of bacteria in a controlled environment.

   同义词breedinggenerationincreasemultiplicationprocreationproliferationreproduction

3. Wave movementC1formalscientific

   The movement or transmission of a wave through a medium, such as sound, light, or radio waves.

   波的传播

   • The propagation of sound waves requires a medium like air or water.
   • Scientists studied the propagation of seismic waves after the earthquake.
   • The speed of light propagation in a vacuum is constant.

   同义词conductionpassageradiationspreadtransmissiontravel