but, like the fabled tortoise, their strategy is to be slow and steady. 不过它们的策略还是稳扎稳打
the slow deposition of dissolved limestone. 都是由水溶碳酸钙缓慢沉淀而来
they slow down, release their sediment and build deltas. 水流减缓 留下大量泥沙 堆成了三角洲
rivers slow down and lose their destructive power. 河水流速变慢 没有了原来的破坏力
These salamanders have an exceptionally slow metabolism. 大鲵的新陈代谢十分缓慢