tymheredd

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

Felly, mae'n cymryd amser i'r traciau hynny ostwng mewn tymheredd er mwyn gallu gwneud gwaith cyweirio.

So, it does take time for those tracks to reduce in temperature for remedial works to take place.B2

Fel y gwyddoch, Ysgrifennydd y Cabinet, mae'n gyffredin i linellau rheilffyrdd anffurfio pan fydd tymheredd y ddaear yn uwch na 30 gradd Celsius.

As you will know, Cabinet Secretary, train line buckling is common when ground temperatures exceed 30 degrees C.C1

Mae'r tymheredd gwleidyddol yn y wlad hon yn ddigon uchel eisoes; nid oes angen i chi ychwanegu tân at y fflamau.

The political temperature in this country is high enough already; it doesn't need you to add fire to the flames.B2