An insider is someone who is involved in a situation and who knows more about it than other people.
例句
An insider said, 'Katharine has told friends it is time to end her career.'一位知情人說：“凱瑟琳已告訴朋友準備結束她的事業(yè)”。German banks have more insider knowledge than most.德國銀行與大多數(shù)銀行相比知曉更多的內部消息。
英漢詞典釋義
n.
(組織等)內部的人;知情人
a Wall Street dealer jailed for insider trading因內幕交易而遭監(jiān)禁的華爾街交易商
英英詞典釋義
Noun
1. an officer of a corporation or others who have access to private information about the corporation's operations