Flowers are designed to attract insects which then carry the pollen from plant to plant.

花儿天生就能吸引昆虫，昆虫则在植物之间传递花粉。

《柯林斯英汉双解大词典》

The bright colors of flowers catch the attention of insects, which then carry their pollen from one flower to another.

花朵鲜艳的颜色吸引昆虫的注意，然后昆虫就把它们的花粉从一朵花带到另一朵花。

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Three times a year Prof Thomson compared the fruiting rate of flowers that were left to be pollinated naturally, or given extra doses of pollen by hand.

汤姆森教授每年三次比较有待自然授粉或需人工授粉花的结实率。

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For example, try to avoid animals with fur,dust, pollen from trees and flowers or cigarette smoke.

VOA: special.2009.07.28

Pollen is a fine dust that comes from grass, trees and flowers.

VOA: special.2009.07.28

There are fewer flowers and so less pollen about.

BBC: Making a bee-line for city roofs

"We know that honeybees can fly over 10km from their hive to a patch of flowers to collect food (nectar and pollen) and then fly home - a round trip of over 20km, " says Dr Raine.

BBC: Mapping the flight of the bumblebee

"All over the city, flowers are now blooming, providing nectar and pollen for all sorts of important bee species and other pollinators, " she said.

BBC: Gloucester named first 'bee guardian' city in UK