The first pass-rate第一次通过率
first-rate a第一流的
Double First-rate双一流
first-rate product优等品
first-rate education一流的教育
national first-rate国内一流
first-grade rate一级率
world first-rate世界一流
first-rate service优质服务
ADJ（形容词） If you say that something or someone is first-rate, you mean that they are extremely good and of the highest quality. 第一流的[表赞许]
People who used his service knew they were dealing with a first-rate professional.
享受过他服务的人们都知道他们是在与一位一流的专家打交道。