Plant could repair DNA damage induced by UV-B through many methods, mainly included light-repair, base excision repair, nucleotide excision repair and recombination repair etc.

植物可以通过多种途径来修复紫外诱导的DNA损伤，主要包括光修复、碱基切除修复、核苷酸切除修复和重组修复等。

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Your body needs to experience all three steps of sleep—light sleep, dream, and deep sleep—to fully repair itself.

你的身体需要经历睡眠的三个步骤——浅睡眠、做梦和深睡眠——从而进行完全的自我修复。

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They received a shot of genes near their retinal cells to repair their light receptors.

他们接受了视网膜细胞附近的基因注射，以帮助修补他们的光受体。

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The polymers return to a pre-defined shape when heated to a certain temperature, and, when damage is detected, an infrared laser sends light through the network to the damaged area, triggers the shape-memory, and commands the area to repair the crack or tear -- regaining up to 96 percent of its original strength.

ENGADGET: Shape-memory polymer knows when it's hurt, fixes itself