1·Objective To investigate the X ray features of precocial congenital skeletal syphilis.
目的探讨先天性早发型骨梅毒x线表现及其特点。
2·The Chinese civilization based on the extremely unenlightened level of productivity, science and culture inevitably bears the character of being precocial.
肇基于生产力水平和科技文化极端落后时代的中华文明，不可避免地带有早熟性。