方法：通过查阅文献获取资料，用比较分析法进行分析。
METHODS: Data were obtained though literature review and which were analyzed comparatively.
通过查阅文献对体外培养软骨细胞修复关节软骨缺损进行综述。
This paper aimed to review articular cartilage defects repaired with articular chondrocytes cultured in vitro by consulting literatures.
通过查阅文献了解到工程项目设计参与方风险意识淡薄，对风险认识不足；
Learned through the literature review the project design of risk awareness among participants of a weak lack of knowledge of risk;
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