Most marine deposits from around the world contain either plankton or a lot of fern spores but not both together in the same layer.

世界上大多数的海洋沉积物不是含有浮游生物就是含有大量的蕨类孢子，但它们并不是同时存在于同一层中。

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The fern spike is the term given to this sudden increase in the abundance of fern spores blown into the oceans around the world.

世界各地的海洋中，蕨类植物的孢子数量突然增加，这种现象被称为“蕨类植物峰值”。

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A ladder fern springs from a crack in the 1979 lava flows from Kilauea Volcano on the Big Island of Hawaii.

1979年，夏威夷大岛的基拉韦厄火山喷发出岩浆，一株梯蕨从裂缝中钻了出来。

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Speaking on the program Fern Britton Meets Tony Blair, that will be screened in its entirety on Sunday, the former prime minister was asked directly that if he had known back in 2003 that there were no WMDS, would he have gone on with the invasion of Iraq?

VOA: standard.2009.12.13

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Gavin, 23, knocked out Graham Fern in his third professional bout on the undercard of Khan's WBA title fight with Andreas Kotelnik on Saturday.

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Legend has it that if you venture into the forest and find a fern in bloom - although it is nearly a botanical impossibility - start digging.

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