Da traduttori professionisti, imprese, pagine web e archivi di traduzione disponibili gratuitamente al pubblico.
er enghraifft , rhaid ystyried effeithlonrwydd gwres , adfer ac ailddefnyddio , allyrredd gwydr ac inswleiddio
for example , heat efficiency , recovery and regeneration , emissivity of glass and insulation must be considered
mae gennyf rai ffeithiau i grynhoi'r her sydd yn ein hwynebu yng nghymru wrth leihau gollyngiadau nwyon ty gwydr
i have a few facts to summarise the challenges that face wales in reducing greenhouse gas emissions