She could not understand why he killed the birds he seemed to like so much.

VOA: special.2010.04.03

We're also going to recognize, however, that insurance got a slow start because-- I believe it is because-- people could not understand the concept of probability.

不管怎么说,我们得承认,保险起步缓慢,因为...,我相信是因为...,人们无法理解概率的概念

耶鲁公开课 - 金融市场课程节选

Robert E.Lee could not understand why the Union force had returned to Chancellorsville.

VOA: special.2009.10.15

They could not understand the delay in carrying out the agreement.

VOA: special.2010.04.01

"Germont and his policemen could not find the letter, because they did not try to understand the mind of the man who stole it.

VOA: special.2009.12.26

Something was ready to explode inside of her because she could not make people understand her.

VOA: special.2009.11.08

I did not understand how a person surrounded by the joy of music could not have some of its sense and beauty inside her.

VOA: special.2009.01.18