蜂鳥(niǎo)發(fā)現(xiàn)花蜜和花粉是很有營(yíng)養(yǎng)的.Hummingbirds have discovered that nectar and pollen are very nutritious.昆蟲(chóng)為花的色彩 、 香氣和花蜜所吸引.Insects are attracted to flowers by their colour, scent and nectar.花蜜和花粉是很有營(yíng)養(yǎng)的.Nectar and pollen are very nutriti...