Je was op zoek naar: unusable (Engels - Wels)

unusable encryption keys
allwedd gêl- ysgrifo anniffiniedig

this would leave the system unusable.
byddai hyn yn golygu na fedrir defnyddio'r system.

signing failed because your secret key is unusable.
methodd llofnodi oherwydd mae eich allwedd gyfrinachol yn anghywir.

however , because of poor maintenance and lack of investment , some parts of the cycle trail in the cynon valley are now unusable
fodd bynnag , oherwydd gwaith cynnal gwael a diffyg buddsoddi , mae rhai rhannau o'r llwybr seiclo yng nghwm cynon na ellir eu defnyddio'n awr

number of workspaces. must be more than zero, and has a fixed maximum to prevent making the desktop unusable by accidentally asking for too many workspaces.
nifer y gweithfannau. rhaid ei fod yn fwy na sero, ac mae uchafswm gosodedig, er mwyn osgoi i chi ofyn am ormod o weithfannau ar y tro, fel na fedrwch chi ddefnyddio'r penbwrdd.

cancel the running upgrade? the system could be in an unusable state if you cancel the upgrade. you are strongly adviced to resume the upgrade.
canslo'r uwchraddiad sy'n rhedeg? gallai'r system fod yn ansefydlog os wnei di ganslo'r uwchraddiad. y cyngor yw i ti ailgychwyn uwchraddio.

that would allow schools that have suffered a catastrophic event that rendered the building unusable , such as a fire , flooding , or the discovery of asbestos , to bid for funds to get it rebuilt quickly
byddai hynny'n caniatáu i'r ysgolion hynny sydd wedi dioddef digwyddiad trychinebus a wnaeth yr adeilad yn annefnyddiol , megis tân , llifogydd , neu ddarganfod asbestos , wneud cynnig am arian i'w hailadeiladu'n gyflym

the upgrade has aborted. your system could be in an unusable state. a recovery will run now (dpkg --configure -a).
mae'r uwchraddiad wedi terfynu. efallai fod cyflwr nad oes modd ei ddefnyddio ar dy system. bydd adferiad yn rhedeg nawr (dpkg --configure -a).

david davies : is it not the case that one reason why the post office has lost so much money is that it was encouraged by the government to spend tens of millions of pounds on developing computer systems to deal with benefits payments , among other matters , that were subsequently deemed to be unusable ? why does your statement not mention this ?
david davies : onid yw'n wir mai un rheswm pam y collodd swyddfa'r post gymaint o arian yw y'i hanogwyd gan y llywodraeth i wario degau o filiynau o bunnoedd ar ddatblygu systemau cyfrifiadur i ddelio â budd-daliadau , ymhlith materion eraill , y dyfarnwyd wedyn na ellid eu defnyddio ? pam nad oes sôn am hyn yn eich datganiad ?