a. 紧急的,极重要的
n. 紧急的事
n. 〔对人的行为具有很大影响的〕观念,信念
an imperative tone 命令的语调
It is imperative to protect scientists' patents. …是势在必行的
It is imperative to meet face to face with the client. 必须面对面接触客户。
A broad and balanced education is an imperative for raising standards. 为提高教育水准,推行广泛和均衡的教育是当务之急。
BrE /əˌbriːviˈeɪʃn/