The old man stayed healthy by walking an hour every day.

那个老人通过每天步行一小时保持健康。

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And the squeaky clean mice, even with the risky gene, stayed healthy.

而这些异常洁净的小实验鼠即使携带了高危基因，也依然健康茁壮。

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And the squeaky clean mice, even with the risky gene, stayed healthy.

而这些异常洁净的小实验鼠即使携带了高危基因，也依然健康茁壮。

youdao