If the human genome were put in a straightline, it would be over six and a half feet long.
若将单一细胞内所有的基因组片段拉成一条直线,那长度将超过6.5英尺。
2
We have taken such a very serpentine course, and the wood itself must be half a mile long in a straightline, for we have never seen the end of it yet since we left the first great path.