Five, the U.S. has plenty of allies to arm on a perpetual basis. (seekingalpha.com)
Unless you're using your microwave on a perpetual basis, there's little reason to worry.) (wellnessmama.com)
In 1903 President Theodore Roosevelt signed an agreement with the puppet government of Cuba leasing the bay on a perpetual basis for 2,000 gold coins a year. (bookbrowse.com)