But their mouths may be even more daunting-urchin teeth can literally chew through stone without getting dull.
但是，它们的口器可能更令人望而生畏——毫不夸张地说，海胆的牙齿可以把岩石咬碎，却永远不会变钝。
Sea urchins are perhaps best known for their armor of spines. But their mouths may be even more daunting-urchin teeth can literally chew through stone without getting dull.
也许关于海胆，人们知道得最多的是它们的棘刺盔甲。但是，它们的口器可能更令人望而生畏——毫不夸张地说，海胆的牙齿可以把岩石咬碎，却永远不会变钝。
The fable that tells us that even water can eventually pierce through stone also points to the importance of patience and diligence.
“水滴水穿”这个寓言也寓意耐心和勤奋的重要性。
The fable that tells us that even water can eventually pierce through stone also points to the importance of patience and diligence.
“水滴水穿”这个寓言也寓意耐心和勤奋的重要性。
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