The labor which it would require to make a single one of these guns by hand would exhaust the patience and perseverance of any ordinary workman.

遇宠辱而不惊则肝自宁，或动或静只要慎重则心自静，饮食有所节制则脾自安，调节呼吸少言语则肺自保全，淡泊少欲则肾气自足。

遗传密码证明了生物系统的复杂性和优雅性。