Brush the fish tank every day.

每天清洗鱼缸。

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Every day a small group of scientists go into a think tank to conduct experiment.

每天，一小组科学家加入智囊团进行实验。

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Every day a small group of scientists go into a think tank to conduct experiment.

每天，一小组科学家加入智囊团进行实验。

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