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mae llawer o fanylion yn dal i'w datrys wrth i'r dyluniad ddatblygu , fel gydag unrhyw brosiect adeiladu mawr
there are still many details to be resolved as the design develops , as with any major building project
fodd bynnag , yr ydym i gyd yn ymwybodol y cafwyd problemau dyrys a bod gormod ohonynt wedi cymryd gormod o amser i'w datrys
however , we are all aware that there have been frustrating problems and too many have taken too long to resolve