Continue to repeat this process over a period of a few days.
继续重复这个过程中的一段时间了数天。
These model systems possess the advantages of low price, short period and easy to repeat.
用小鸡建立学习记忆模型研究学习记忆，具有成本低，周期短，实验重复性好等优点。
These model systems possess the advantages of low price, short period and easy to repeat.
用小鸡建立学习记忆模型研究学习记忆，具有成本低，周期短，实验重复性好等优点。
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