The tectonic plates are always slowly moving, but they get stuck at their edges due to friction.
板块一直在缓慢的移动中,但它们的边缘会因为摩擦力而挤在一起。
Those marshes are "an ideal natural laboratory," Horton said, because they are always slowly sinking and being rebuilt as tides wash in new sediment.
Horton认为那些沼泽简直就是“理想的自然实验室”,因为它们常常发生缓慢沉降,同时随着潮水携带进新的沉积物而被缓慢重构。
When I am in a hurry, the car in front of me always drives slowly.
每当我赶时间,前边的车永远慢慢地开。
It's reversible, that means that p external, equals p. I'm doing it very slowly so that I'm always in equilibrium between the external pressure and the internal pressure so I can go back and forth.
我都可以不损失能量,而把过程逆向进行,整个过程中的,每一步都保持平衡,现在我们来分别。
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