learn from汉语意思是从……了解到，所以learn from有了解的意思。

We learned from the manager that she had been offered a good position.从经理那里了解到，他已经得到了一份好的职位。She has learned from his friend that she can have a chance to go to college.他从他朋友那里了解到，他有机会上大学了