So necessary are the visits of bees to many papilionaceous flowers, that their fertility is greatly diminished if these visits be prevented.
蜜蜂对许多蝶形花的访问是如此必要, 如果阻止这些访问, 它们的生育能力就会大大降低。
单词 | papilionaceous |
释义 |
papilionaceous
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