In the seed world, that makes them rare, because most seeds from flowering plants are quite robust.

在种子世界里，这使得它们很稀有，因为大多数开花植物的种子都很结实。

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Russia's Pavlovsk Experimental Station houses one of the oldest seed and plant collections in the world.

VOA: special.2010.08.24

Soybean is an important seed around the world, but it is only twenty percent oil.

VOA: special.2009.09.29

In the accompanying WTA event, top seed and World No.1 Victoria Azarenka swept past second seed Maria Sharapova of Russia in straight sets in the final.

CNN: Nishikori and Djokovic sweep to title triumphs

In Oeiras, Stanislas Wawrinka upset top seed and world No. 4 David Ferrer 6-1 6-4 to win the Portugal Open on Sunday.

CNN: Tennis stars Federer and Nadal honor 'a very loved man'

Top seed and world number one Lindsay Davenport is on Court Four wacking balls left, right and centre as she bids to get back in the zone before resuming her rain-affected semi-final tussle with the number three seed Amelie Mauresmo.

BBC: SPORT | Tennis | Wimbledon blog