Selections for the Registry, which are recommended to Mr.Billington by the National Recording Preservation Board, must be at least 10 years old and deemed "culturally,historically or aesthetically significant."

VOA: standard.2010.07.08

Look, you're smart enough probably most of you to pull off some sort of B without breaking into a sweat, or at least not a significant sweat.

听着，你们也许足够聪明大多数人,最终不费力的得到80分，或是至少花点功夫。

耶鲁公开课 - 死亡课程节选

At least they found statistically significant results when they came to that.

至少发现了几点显著的结果,当发现这几个差异时。

哈佛公开课 - 幸福课课程节选