有些植物从不开花，对吗？
某些植物种类如果感觉到了太多光就不开花，而有些只有感觉到了一定程度的光才会开花。
Certain plant species won't flower if they sense too much light and some plants will only flower if they sense a specific amount of light.
如果你走进花园，发现非洲金盏花在早上7点后就不开花了，你可以很肯定，这将是一个雨天。
If you go into the garden, and find the African marigolds shut after seven o'clock in the morning, you may be pretty sure that there will be a rainy day.
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