They peak at 20 then gradually go back again, but body clocks do not reach the pre-teenage level until around 55 years old.

这种改变在20岁的时候到达顶峰并且慢慢回落，但是生物钟直到55岁左右才会慢慢回落到十几岁之前的状态。

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This is not only in the good "air bath", also accepted the hardy training, the body gradually adapt to the cold stimulation, for the upcoming winter ready.

这不但是在进行好的“空气浴”，还接受了耐寒训练，使身体逐渐适应寒冷的刺激，为即将到来的寒冬做好充分的准备。

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Gradually, people have made a long bamboo appearance, hope the fish see dragons have fled, do not eat Qu's body.

渐渐地，人们把竹筏做成了龙的模样，希望鱼儿看到龙都纷纷逃走，不要吃屈原的尸体。

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