Lǎo / shī / yòng / yí / gè / jiǎn / dān / de / lì / zi / bāng / zhù / xué / shēng / lǐ / jiě / zhī / shí / lùn / zhōng / de / wèn / tí / 。老师用一个简单的例子帮助学生理解知识论中的问题。The teacher used a simple example to help students understand an issue in epistemology.