Rhaid adolygu'r strategaeth BSL o leiaf unwaith bob chwe blynedd o'r dyddiad y cafodd ei chyhoeddi gyntaf, er y gellir ei hadolygu ar unrhyw adeg yn y cyfnod hwnnw.
The BSL strategy must be reviewed at least once in every six years from the date it was first published, although it can be reviewed at any time within that period.
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