Bellwethers
系铃的公羊( bellwether的名词复数 )；前导；领导者；群众的首领
🗣️ 情景例句
Yes. About four years ago.
是的 ，大约四年前走的。
Suit the action to the word.
怎么说就怎么做。
It took great imagination as well as patience for Annie to teach me to speak.
教我说话需要极大的想像力和耐心。