Once-or-twice synonyms

Quantities can be learned from experience, and from watching individual cases; frequency varies within very wide limits, from reptiles which at most may feed once a week and fast for long periods, to the smaller insectivorous birds which require to be fed every two or three hours, and which in the winter dark of northern latitudes must be lighted up once or twice in the night to have the opportunity of feeding.

Then they are turned once or twice in their dry state by men with shovels.

in breadth, according to the size of the border and width of the walk, make a very handsome edging, but they should not be allowed to rise more than an inch and a half above the gravel, the grass being kept short by repeated mowings, and the edges kept trim and well-defined by frequently clipping with shears and cutting once or twice a year with an edging iron.

He marched once or twice against law-breakers, but ~ in all the German duchies there were frequent disturbances which he did very little to check.

Only once or twice does Rutilius speak directly of Christianity, and then only to attack the monks, whom the temporal authorities had hardly as yet recognized, and whom, indeed, only a short time before, a Christian emperor had forced by thousands into the ranks of his army.