青少年处在向成年阶段转型的过渡期，这一阶段需要他们进行独立思考并独立做出选择，因此他们有时候会感到迷茫。
Being in transition to adulthood requires teenagers to think and make choices independently, so they might sometimes feel lost.
土壤中含有着石器时代的人影响的证据，波瑟解释说，这一个时期作为一个独立的地质时代来说已经有很长一段时间了。
The soil contains evidence of the influence of man since the Stone age, bose explains, and this age has already been treated as an independent geological era for a long time.
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