vorticella

• 钟虫属，一类淡水纤毛虫原生动物，身体透明呈钟形或杯形，具有可伸缩的柄，多附着于水草或其他物体上。

A noun referring to any of various protozoa characterized by a transparent, goblet-shaped body and a retractile stalk.

1. Bell-shaped protozoanC2formalscientific

   Any of various ciliate protozoa of the genus Vorticella, having a transparent, bell-shaped or goblet-shaped body attached to a substrate by a long, contractile stalk.

   钟虫

   • Under the microscope, the vorticella's stalk contracted rapidly when disturbed.
   • The pond water sample contained numerous vorticella attached to a submerged leaf.
   • Vorticella use their cilia to create a water current that draws in bacteria for food.