Telomerase is known to protect telomeres which stop the string of DNA unravelling much like the plastic tips at the ends of shoelaces stop fraying.

正如人们所了解的，端粒酶因其能够保护端粒，从而阻止DNA链的分离，就像鞋带末端的塑料能防止其受到磨损。

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Nancy had asked I stop at the hardware store on my way home to pick up some odds and ends including a handful of screws to hand the paintings.

南茜让我在回家的路上到五金制品店里买一些零星的杂物，包括一把挂画用的螺丝钉。

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When these were injected into yeast, the DNA sequence protected the chromosomes when they were copied, just as the plastic tips at the ends of shoelaces stop them from fraying.

当这些微型染色体注入到酵母细胞中后，在细胞分裂时，这种CCCCAA的DNA序列在复制时对染色体起到了保护作用，就像鞋带末端的塑料帽对鞋带起到的防磨损作用。

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Tour goers can choose between two coastal tracks: the 4km hike ends at Curracurrang, where the guides tell aboriginal stories and set up an impressive midnight tea and coffee stop, and the 8km hike ends at Eagle Rock, where you can take a dip in a secluded waterhole by moonlight.

BBC: Moonwalk in Sydney's Royal National Park