There should be a credible case in place before a citizen is required to travel.

They would still be required to travel to other parts of China.

As a customs agent he was required to travel frequently.

Two-way Permit are required to travel to the former two regions.

Among other things, by the time required to travel and communicate with its parts.

Not that it's ever required to travel more than a few yards at a time.

Permits are required to travel to the park and will take 4 to 6 weeks to arrange.

One of these is the expense and time that is required to travel to the island.

Similar principles apply to all vehicles that are required to travel in a straight line.

Special permits were required to travel through the town.