Je was op zoek naar: at a height (Engels - Wels)

one at a time
un ar y tro

one day at a time,
un dydd ar y tro,

at a distance of:
pellder: city name (optional, probably does not need a translation)

one at a time please
un ar y tro os gwelwch yn dda

it comes at a price
mae angen talu amdano

it breeds at a ferocious rate
mae'n amlhau ar gyfradd wyllt

technology is expanding at a huge rate
mae technoleg yn ymestyn yn gyflym iawn

you can only play one game at a time.
dim ond un gêm fedrwch chi ei chwarae ar y tro.

i got up at a quarter past eleven
codais i am chwarter wedi un ar ddeg

print more than one sudoku at a time.
argraffu mwy nag un pos sudoku ar y pryd.

it is discourtesy at a high level indeed
mae'n anghwrteisi ar lefel uchel iawn

at present , we are at a turning point
ar hyn o bryd , yr ydym yn sefyll ar y groesffordd

at a political level we must do two things
ar lefel wleidyddol rhaid inni wneud dau beth

dairy farmers are producing at a loss at present
mae ffermwyr llaeth yn cynhyrchu ar golled ar hyn o bryd

this so-called progress has come at a price
mae pris i'w dalu am y cynnydd honedig yma

at a recent conference the green paper was discussed
mewn cynhadledd yn ddiweddar , trafodwyd y papur gwyrdd

in addition , mortgage rates are at a 40-year low
yn ogystal , mae cyfraddau morgeisi ar eu hisaf ers 40 mlynedd

floodlights at a rugby pitch were shot out during a match
chwalwyd y llifoleuadau ar gae rygbi â gwn aer yn ystod gêm

andrew davies : you can look at a situation from many angles
andrew davies : gallwch edrych ar y sefyllfa mewn sawl ffordd

forty thousand patients were treated at a cost of £86 million
triniwyd 40 ,000 o gleifion ar gost o £86 miliwn