Such information is needed before humans can safely travel to Mars and beyond in the next century.

On the other hand, she could not safely travel alone, so she might have to help me.

Only we who have left violence behind can safely travel from star to star.

Most pregnant women can travel safely until close to their due date.

In this section, we will show you how to travel safely with arthritis.

"How long will it be until she can travel safely?"

"Parking and the ability to travel safely from the car to the building is fundamental."

Your ship may travel safely through our space to return home.

Now, the demand to leave the valley, to travel safely under escort to the city.

I traveled safely alone on foot, with no training at all, four years ago.