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yr oedd y lefelau yn y samplau pysgod a physgod cregyn yn rhy isel i'w dadansoddi , ond cafwyd lefelau canfyddadwy mewn cimychiaid
levels in fish and shellfish samples were too low to analyse , but detectable levels were found in lobsters
ni phryderant rhyw lawer am fanylrwydd , cymhlethdodau a manylion technegol gofynion benthyca'r cyhoedd , yr anghenion canfyddadwy neu'r sefyllfa economaidd macro
they are not particularly concerned with the niceties , intricacies and technicalities of the public borrowing requirement , the perceived needs or the macro economic situation