食土的习俗，食土的行为很常见，或许是因为“干净的”泥土似乎能给予人体一些保护，免受寄生物、病原体的侵扰。
The practice of dirt-eating, or geophagy, is common, perhaps because "clean" dirt appears to impart some protection against parasites and pathogens.Cynthia Graber reports.
食土的习俗，食土的行为很常见，或许是因为“干净的”泥土似乎能给予人体一些保护，免受寄生物、病原体的侵扰。
The practice of dirt-eating, or geophagy, is common, perhaps because "clean" dirt appears to impart some protection against parasites and pathogens. Cynthia Graber reports.
但是目前我国保护古生物化石与地质遗迹的法律存在严重缺陷，不能有效地打击侵害古生物化石与地质遗迹的违法犯罪行为。
However, there are some flaws in the current laws which can't attacks availably the infringement on ammonite rest fossil and the transgression of the geologic trace.
步态变化对股胫关节接触生物力学特性影响的量化研究对人们认识关节的力学行为，保护关节减少伤害非常重要。
To evaluate the effect of fibula shortening on biomechanical characters of tibiotalar joint and prescribe the most acceptable extent of fibula shortening.
正在形成生物膜的细菌行为方式与自由态时是不同的，它会导致形成多层含有多聚糖的膜，覆盖在生物膜的表面成为保护层。
Bacteria in formatting biofilms behave differently than in a free state. This leads to the formation of layers containing polysaccharide which overlie the bacteria of the biofilm as a protector.
正在形成生物膜的细菌行为方式与自由态时是不同的，它会导致形成多层含有多聚糖的膜，覆盖在生物膜的表面成为保护层。
Bacteria in formatting biofilms behave differently than in a free state. This leads to the formation of layers containing polysaccharide which overlie the bacteria of the biofilm as a protector.
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