因而为所有的图片提供替代文本就尤为重要，这能使所有用户都了解其信息。
Therefore, it's important to provide alternative text for all images so that all users can receive the information.
现在，研究人员声称他们已经弄清了不同类型的箱形水母之间的进化关系，从而为其毒性的进化提供了认识。
Researchers now say they have determined the evolutionary relationships among the various species of box jellyfish, providing insight into the evolution of their toxicity.
目的：评价新型含锶磷酸钙骨水泥的生物相容性和安全性，从而为其在骨缺损修复领域中的临床运用提供依据。
AIM: To study the biocompatibility and safety of strontium containing calcium phosphate cement for the clinical use in the bone reconstruction.
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