in the past, someone who was paid to clap and show their approval of a performer or performers, for example in the theatre

The claqueurs applaud as loudly as possible for their favourite dancers in exchange for free tickets. 喝彩引导员们尽可能大声地为他们喜爱的舞者鼓掌，以此换取免费门票。

The post of chief claqueur in a large theatre was greatly sought after. 大剧院里的首席喝彩引导员的职位是非常抢手的。

someone who admires and supports a person very strongly and agrees with what he or she says or does

Nothing that he and his claqueurs did could save the Liberals. 他和他的支持者所做的一切都救不了自由党。