Hummingbirds have discovered that nectar and pollen are very nutritious.
蜂发现蜜和粉是很有营。
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The plants which produced flowers with the largest glands or nectaries, excreting most nectar, would oftenest be visited by insects, and would oftenest be crossed; and so in the long-run would gain the upper hand and form a local variety.
开花的植物有最大的腺体或蜜腺, 分泌最多的花蜜, 最常被昆虫光顾, 也最常杂交;因此,长远来看, 它们将占据上风并形成本地品种。