Farmers all over the world know the importance and immutability of the seasons.

全世界的农民们都明白季节的重要性和永恒性。

It has been asserted over and over again, by writers who believe in the immutability of species, that geology yields no linking forms.

相信物种不变性的作家一再断言， 地质学不会产生任何联系形式。