The subjects saw 120 unfamiliar faces, each one repeated four times at varying intervals during the fMRI scan.

在fMRI扫描期间，这些受试者被要求看120张陌生的面孔，每张面孔以不同的间隔重复出现4次。

youdao

According to the researchers, the dating is reliable, since it was repeated four times with independent leaves of parchment.

据研究者称，这样的碳素测量是可靠的，因为实验在不同的羊皮纸页上重复了四次。

youdao

After resting for four minutes, the volunteers repeated the interval several times, for a total of two to three minutes of extremely intense exercise.

休息4分钟后，志愿者们又重复了数次，一共约进行了2到3分钟的最高强度骑行。

youdao

One that has been repeated many times says: "Here Lies Lester Moore, Four Slugs from a Forty-Four, No Les,No More."

VOA: special.2010.02.15

He also repeated four times that he won't vote for a bill that raises the federal deficit, and explained how the goal of overhauling health care is to end discriminatory practices by the insurance industry while bringing down costs.

CNN: Tough questions, frustrations continue in town halls

The report said Mr Parsons had breached the code of conduct four times after failing to promptly repay money for trips to Brussels, despite repeated requests.

BBC: Leicester