What’s important for you to understand is that these three movements, well, they are cyclical, and they work together to form, to produce complex but regular variations in earth’s climate, and lead to the growth or decline of glaciers.

对你来说重要的是要理解这三个运动， 嗯，它们是周期性的， 它们共同作用形成， 在地球气候中产生复杂但有规律的变化， 并导致冰川的增长或衰退。