课后，学生们终于明白了如何解这些数学题。
After the lesson, the students finally understood how to solve these maths problems.
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understood英 /ˌʌndəˈstʊd/|美 /ˌʌndərˈstʊd/
解释
understand 是动词，意思是"理解、明白"，指通过思考或学习掌握某个概念或知识。understood 是 understand 的过去式。
After the lesson, the students finally understood how to solve these maths problems.
understand 是动词，意思是"理解、明白"，指通过思考或学习掌握某个概念或知识。understood 是 understand 的过去式。