Grains of pollen on a geranium stigma.
天竺葵柱头上的花粉颗粒。
Pollen on Geranium Stigma: the size of the grains is measured in millionths of a meter, but the romantic journeys of pollen are epic.
天竺葵柱头上的花粉，花粉颗粒的尺寸以百万分之一米计量，然而其浪漫的旅程简直是史诗般的。
Pollen on Geranium Stigma: the size of the grains is measured in millionths of a meter, but the romantic journeys of pollen are epic.
天竺葵柱头上的花粉，花粉颗粒的尺寸以百万分之一米计量，然而其浪漫的旅程简直是史诗般的。
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