Wǒmen de lìshǐ lǎoshī jiànwén guǎngbó, jiǎngkè tèbié shēngdòng.
Our history teacher has seen and heard a great deal, and his lessons are especially lively.
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广博 describes how far knowledge or experience reaches: 知识广博, 见闻广博, 学识广博. 渊博 praises depth as well as breadth and is the stronger compliment for a scholar.