Her question underlined how little she understood him.

她的问题表明她多么不了解他。

《牛津词典》

Her lawyer said she understood the consequences of her actions and was prepared to go to jail.

她的律师说她明白自己行为的后果并准备去坐牢。

《柯林斯英汉双解大词典》

Only she understood him.

只有她才理解他。

youdao

She understood it very well. But somehow,at that moment, she could not explain it.

VOA: special.2009.10.25

She understood what she had done and was not happy.

VOA: special.2009.11.08

She thought she understood sculpture as well as others.

VOA: special.2009.11.15

Widowed so young, she understood the trauma of loss and the enormity of grief.

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In other words, she understood that what she was doing was wrong and walked away.

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Nancy laughed and said that she had guessed that and of course she understood.

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