以下为句子列表：
英文: But the fact that an ancestor of an important modern pollinator existed back then could help scientists explain the rapid expansion of floral diversity in the early to mid-Cretaceous .
中文: 但存在如此古老的传粉媒介的事实可以帮助科学家们解释在白垩纪早期到中期开花植物的快速多样化。
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英文: By modifying the smell of crops such as vanilla, which have specific pollinator species, different insects might be attracted.
中文: 香草等农作物具有特定的传粉昆虫，但对其香味进行修饰后，可吸引不同的昆虫。
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