Chen Hao-yung explains that viruses are among the world's smallest and most ancient biological entities. They are composed of a protein shell enclosing a minute amount of genetic material, and are only one-hundredth to one-thousandth the size of a bacterium.
陳豪勇指出，病毒是世界上最小且最古老的生命體，由一個蛋白質外殼與微量的遺傳物質組成，大約只有細菌的百分之一到千分之一大小。