C1
someone or something that supplies information
信息来源
The journalist refused to reveal her sources (= say who had given the information to her).
记者拒绝透露消息的来源。
According to government sources (= people in the government) many MPs are worried about this issue.
政府方面透露,很多下议院议员对这个问题表示担忧。
According to congressional sources (= people who work in Congress) many Representatives are worried about this issue.
国会方面透露,很多众议员对这个问题表示担忧。
Always acknowledge your sources (= say which books you have used) at the end of a paper.
论文的末尾务必列出参考书目。
at source
to get something from a particular place