bellwether

名词 bellwether:

1. someone who assumes leadership of a movement or activity
2. sheep that leads the herd often wearing a bell

bell.weth.er

n.（名词）
One that serves as a leader or as a leading indicator of future trends:
首领，先兆：作为领导者或对未来趋势作出指示者的人或事：
例句：
.The degree to which the paper is censored is a political bellwether.(Justine De Lacy)
.对报纸审查的程度是一个政治预兆.(朱斯蒂娜·德·莱西)

来源：
Middle English bellewether [wether with a bell hung from its neck, leader of the flock]
中古英语 bellewether [脖子上挂着铃的阉羊，群首]
belle [bell] * see bell
belle [铃] *参见 bell
wether [wether] * see wether
wether [阉羊] *参见 wether