常見例句雙語例句Your shoelace has come loose.你的鞋帶松了。《新英漢大辭典》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.這些DNA部分即所謂的端粒，它們的作用類似鞋帶兩頭的塑料帽，可以保持染色體不會磨損，里面的基因不會散開。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.他們將測量染色體端粒的長度。 染色體端粒是第個染色體兩端的 DNA團(tuán)塊，就像鞋帶的末端，在細(xì)胞進(jìn)行分裂時，它會阻止DNA鏈散開。 返回 shoelace