shoelace

常见例句

Your shoelace has come loose.
你的鞋带松了。
《新英汉大辞典》
These DNA units, known as telomeres, act like the plastic caps at the ends of a shoelace, keeping the chromosomes from fraying and the genes inside them from unraveling.
这些DNA部分即所谓的端粒，它们的作用类似鞋带两头的塑料帽，可以保持染色体不会磨损，里面的基因不会散开。
They will be measuring the length of telomeres — wads of DNA at the top and bottom of every chromosome that, like shoelace tips, keep them from unraveling when a cell divides.
他们将测量染色体端粒的长度。染色体端粒是第个染色体两端的 DNA团块，就像鞋带的末端，在细胞进行分裂时，它会阻止DNA链散开。