authoritative

权威的英释adjadjan authoritative book, account etc is respected because the person who wrote it knows a lot about the subject

1 authoritative information官方消息

2 authoritative source权威人士；权威来源

1 真题例句...the authors provide the most authoritative volume to date that describes--and more importantly predicts--how the Internet will shape our lives in the coming decades...第一套CET42014.12阅读理解

1 the most authoritative work on English surnames.有关英语姓氏的最权威著作