occurring twice a week; occurring once every one-half a week.

listen to the pronunciation of occurring twice a week; occurring once every one-half a week.
Английский Язык - Английский Язык

Определение occurring twice a week; occurring once every one-half a week. в Английский Язык Английский Язык словарь

Occurring twice a week; occurring once every one-half a week.
semi-weekly