B2 the place something comes from or starts at, or the cause of something来源,出处;发源地;起源,根源
C1 someone or something that supplies information信息来源
at the place where something comes from在源头,从一开始
More examples
The opera house is a great source of civic pride.
His main source of work had dried up, leaving him short of money.
Some alluvial deposits are a rich source of diamonds.
Engineers are endeavouring to locate the source of the problem.
He's established himself as a dependable source of information.
to get something from a particular place从(某地)获取
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