I think I'm going to need someone all year long.
From here the caravans start for Persia, and at certain periods of the year long trains of camels may be seen, and Persian merchants conspicuous by their high black caps and long robes.
year-long siege of Calais.
A year-long blockade will be something that even Parliament, & the public at large, are unable to ignore.
culmination of a year long inquiry.