It must needs undergo some undulations before it returns to a state of rest, like a mountain sinking into the plain.There are no Alps without their Jura, nor Pyrenees without the Asturias.

• 在回到平静时期之前必须经过一段波折，好象高山慢慢达到平原一样，好比没有汝拉山区就没有阿尔卑斯山脉，没有阿斯图里亚斯，就没有比利牛斯山脉。