我看他的表情是似懂非懂的，可他却说完全听懂了。

I thought he didn't catch it, although he seemed to have understood, but he said that he had understood completely.

刚上学时，妈妈常跟我说：“你要好好读书。”那时的我，似懂非懂地点着头。

When I just went to school, mother often said to me: "you must study hard. " At that time, I nodded but I didn't really understand.

突然，那些经常谈起的家族故事，她从小就听，尽管有点不耐烦但仍然似懂非懂地听着故事，现在像水晶般清晰起来。

Of a sudden, the oft-told family tales to which she had listened since babyhood, listened half-bored, impatient and but partly comprehending, were crystal clear.