They are expected to have an operational lifetime of 5 years.

The observatory is expected to have a lifetime of at least two years, probably much longer.

A lifetime of 10-15 years is too long for planning purposes.

In his entire lifetime of several hundred years, nobody had ever done that to him before.

It was launched on 13th May 2003, and has an expected lifetime of 15 years.

But in my lifetime of 46 years, the federal government has only managed to balance its budget three times.

These tanks have a lifetime of 30 to 40 years.

Over the lifetime of nearly 80 years, the school and its infrastructure have shown very good growth.

The mission is planned to have a lifetime of around two years.

The satellite has an expected lifetime of at least 15 years.