The tower was built at an uncertain time before the 15th century.
But in uncertain times it is usually best to deal with a machine.
It means nothing more than that we live in uncertain times.
In uncertain times, a man must turn his hand to everything.
I graduated from college in 1990, an uncertain time indeed.
These are uncertain times and no one really knows what will happen.
Oil issues, which tend to do well in uncertain times, were also strong.
But these are more uncertain times in many ways, even for people who have always been tied to the land.
In uncertain times, they are also the first items put on hold.
A man couldn't ask for more in these uncertain times.