youdao

All the problems have been solved.

所有的问题都解决了。

youdao

The problem has already been solved。

问题已解决。

《新英汉大辞典》

Many people believed the problem of slavery had been solved.

VOA: special.2009.04.09

I don't think, some do, that the question of cultural relativism has been solved.

虽然有些人持相反观点，但我觉得,文化相对主义这个问题并没有被解决。

普林斯顿公开课 - 人性课程节选

If this were a problem parents alone could solve, it would have been solved decades ago.

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Neither this nor any other of Russia's most famous contract killings has been solved.

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Another long-standing worry has also been solved--at least until hackers devise a way around it.

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