And as Francis Crick pointed out, nine years after discovering DNA with Mr. Watson, that life itself has to have growth as a precondition -- it has to have free energy, sunlight and it needs to be an open system of chemicals.
诚如弗朗西斯克里克所指出， 在和华生发现 DNA 后九年， 生命要能成长的前提是 — 它要有免费能源、阳光 且它应是一个化学物质的开放系统。