Obviously we \ 're based on other studies, so this has come up before.
显然地，我们基于其他的研究，因此，这在以前就出现过。
2
Informal studies have observed that Google tends to prioritize original reporting over re-reported content.
非正式的研究已经表明Google趋向于优先选择最原始的报道。
3
The current research involved a re-analysis of data fromdozens of previous studies, which included more than 218, 000 participants withat least one copy of an FTO variation.