used to emphasize the truth of an assertion, especially one contrary to what might be expected or what has been asserted
[尤用于强调与期望或说法相反的说辞的真相]事实上,实际上
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the subjects appear off-guard, but the photographer has in fact got them to pose .照片中人看上去像是偷拍来的,但实际是摄影师让他们摆了姿势的。