agitator

n.

（尤指政治变革的）鼓动者；煽动者；搅拌器；搅拌机

复数：agitators

1. The authorities arrested the main agitator of the movement.
   当局拘捕了运动的主要煽动者。
2. Honest agitator is necessary to the solution of some social problem.
   诚实的鼓动者对解决某些社会问题是必要的。
3. The emergency storage pit is also equipped with an agitator.
   事故浆液池也装配有一个搅拌器。

From daikon to agitator: lessons and challenges in building a commercial tool for developer testing
Agitator tool
Research and application of non metal agitator for Zinc Hydrometallurgy
Indifferent soil agitator or selective gourmet? Strategies of food intake by earthworms
Mixing of Two Miscible Viscous Newtonian Liquid in a Helical Ribbon Agitator
Suspending of solid particles in liquid by agitators
The trailing vortex system produced by Rushton turbine agitators
Release of protein from Bakers' yeast (Saccharomyces cerevisiae) by disruption in an industrial agitator mill
Stirring by chaotic advection
The Daikon system for dynamic detection of likely invariants