Interaction of lead with earthworm-secreted calcium carbonate granules.
铅与蚯蚓分泌的碳酸钙颗粒之间的反应/相互作用.
Earthworm granules can incorporate Pb into their structure and onto their surface
蚯蚓分泌的这些颗粒能把铅吸附到其组织结构中或吸附到其表面.（their是指颗粒）