They said that many problems had been solved.

他们说，在这样的水平上，下面这些问题都解决了。

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For most of the past century it was assumed that the problem had been solved.

在上世纪大多数的时间里，人们以为这一问题已经得到了解决。

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The problem of phase separation in lead tin fluorophosphate glass had been solved, and a relatively stable glass compositions had been designed.

解决了铅锡氟磷酸盐玻璃中存在的分相问题，设计了较好的玻璃组分。

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Many people believed the problem of slavery had been solved.

VOA: special.2009.04.09

In an attempt to solve a problem in a legislative manner when that very problem had already been solved by voluntary industry cooperation.

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Psychologists had 543 men and women in a mall, ages 25 to 75, take a test that involved quickly evaluating whether a series of arithmetic problems had been properly solved.

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When I told her my family history of mental illness that included at least one suicide, she threw her pen down on the floor as if this years-long mystery had finally been solved.

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