Several other mass extinctions in the geological record have been tentatively identified with large impacts, but none is so dramatic as the Cretaceous event.

地质记录中的其他几次大规模物种灭绝也被认为影响重大，但没有哪一次像白垩纪大灭绝那样夸张。

youdao

The Permian event has attracted much less attention than other mass extinctions because mostly unfamiliar species perished at that time.

二叠纪大灭绝事件比其他大灭绝事件受到的关注要少得多，因为那时灭绝的大多是我们不熟悉的物种。

youdao

Following each mass extinction, there is a sudden evolutionary burst as new species develop to fill the ecological niches opened by the event.

在每一次物种大灭绝后，都有一次突然的进化爆发，因为会有新物种出现来填补灭绝创造的生态位。

youdao

The Mass was the largest event of this week-long trip to Africa.

VOA: standard.2009.03.22

For Saudi Arabia, the host country, the mass religious event involving a precise set of symbolic rituals, is hugely significant.

CNN: The Hajj: A perfect storm for swine flu?

Olofsson-Zidek, who won gold in the mass-start event in the 2006 Turin Games, crossed the line in sixth place but was subsequently moved up to fourth in the standings.

BBC: Magdalena Neuner gains revenge in pursuit

The goal of the pilot program was to evaluate how long it would take to vaccinate a community in the event that mass vaccinations (from a flu pandemic) were required in a short period of time.

FORBES: Drive-through Flu Shots Gaining Popularity in U.S.