6 sentences with “periodically”

Water the soil once a week and change the water in the drinking trough periodically.

Visit your gynecologist periodically for a check-up and to be informed about scientific advances.

The Crusades were a series of invasions of the Middle East by Europeans in the name of Christianity. They continued, periodically, for centuries.

Paul III, Paul IV, and the later Pope, Pius IV, oversaw a series of meetings, the Council of Trent, which took place periodically between 1545 and 1563.

For the rest of the Roman imperial period, Rome and Persia periodically engaged in incursions and large-scale warfare, with neither side able to defeat the other decisively.

Stalin's paranoia was reflected in his ruthless policies. Beginning in the late 1920s, Stalin forced massive change in the Soviet economy and society while periodically killing anyone he could imagine as a threat or enemy.