eithafol

Roedd y gwres eithafol yn golygu bod yr hyn a fyddai wedi bod yn waith atgyweirio syml wedi dod yn fwy cymhleth, gan arwain at ganslo trenau i ac o Aberdâr a Merthyr Tudful.

The extreme heat meant that what would have been a straightforward repair became more complex, resulting in the cancellation of trains to and from Aberdare and Merthyr Tydfil.

C1

Mae hyn yn digwydd yn rheolaidd ledled y DU a thu hwnt pan fydd gwres eithafol.

This happens on a regular basis across the UK and further afield when there is extreme heat.

B2

Nawr, mae'n ddiddorol nodi y gall traciau trên fod 20 gradd Celsius yn boethach na thymheredd yr aer pan fydd gwres eithafol, a dim ond ar ôl iddynt gyrraedd tymheredd o 24 gradd Celsius y gallwch atgyweirio traciau trên.

Now, it's interesting to note that train tracks can be 20 degrees Celsius hotter than air temperature when there's extreme heat, and you can only repair train tracks once they reach a temperature of 24 degrees Celsius.

C1

Fe'i hachoswyd gan dymereddau tywydd eithafol, ac mae hynny'n rhywbeth a fydd yn digwydd yn amlach.

It was caused by extreme weather temperatures, and that is something that's going to become more frequent.

B2

Nawr, mae Trafnidiaeth Cymru yn datblygu ei strategaethau gwytnwch ac addasu i'r hinsawdd i ymateb i effaith tywydd eithafol ar ei seilwaith a'i wasanaethau, ac mae ganddynt gynlluniau gweithredol pwrpasol ar gyfer digwyddiadau o'r fath.

Now, Transport for Wales is developing its climate adaptation and resilience strategies to respond to the impact of extreme weather on its infrastructure and services, and they have dedicated operational plans for this sort of event.

C1