铅积累在血液，骨骼和软组织中。铅难以被排出体外，可影响血液，肾脏，肝脏和神经系统。
Lead (Pb) accumulates in the blood, bone and soft tissues. It is not readily excreted and can affect the blood, kidneys, liver and nervous system.
中脸部并前颅底侵犯肿瘤切除后会留下复杂之骨骼和软组织的缺损。
Resection of malignancies of the midface with anterior cranial base involvement may result in complex bone and soft tissue deficiencies.
推断年龄目前主要依据人体骨骼、软组织、细胞和生物大分子，以及组织中各类物质的物理和化学特性等随年龄增长的时序性变化。
The main methods of age estimation at present mostly rely on characteristic physical and chemical changes of skeleton, soft tissue, cells, biomacromolecules and the other substances.
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