In fact anyone that keeps tortoises in captivity will tell you that they may go through several growth spurts in a single year when young, in that case multiple rings may be added yearly.

• 事实上，任何一个圈养陆龟的人都能告诉你，当他们的龟年轻时，很可能经历过一年中生长快速，在这样的案例中，一年可能生长了多条生长纹。