You see that it sort of looks like—well actually it's much more complex than this, but it reminds us—a couple of springs linked together, two coiled-up pieces of DNA.

你看它看起来有点像——好吧，实际上它比这个复杂得多，但它让我们想起——一些连在一起的弹簧，像两个螺旋状的DNA片段。