12.Meanwhile, the glacier continues to recede, and numerous rills, still younger than the lake itself, bring down glacier-mud, sand-grains, and pebbles, giving rise to margin-rings and plats of soil.
与此同时,冰川继续消退, 许多比湖泊本身还年轻
溪流带下冰川泥、沙粒和鹅卵石, 形成边缘环和土壤平台。机翻