{knowledge.title}
{knowledge.difficulty}
{knowledge.stage}
{knowledge.subject}
{knowledge.grade}
概念定义
{knowledge.description}
{knowledge.content}
知识点详解
解法步骤详解
{knowledge.steps}
应用场景
{knowledge.applications}
易错点分析
{knowledge.common_mistakes}
例题解析
{knowledge.examples}