ffiseg

Mae e'n dysgu Ffiseg.

He is teaching Physics.

Rwy'n meddwl hefyd ei bod yn bwysig peidio â darogan gwae ynghylch y pethau hyn, gan nad yw'r heriau yn unigryw i'r Gymraeg—maent yr un peth ar gyfer ffiseg, cemeg, ond maent yn waeth o ran recriwtio cyfrwng Cymraeg.

I think it is important as well not to have a counsel of doom on these things, because the challenges aren't unique to Welsh—they're the same for physics, chemistry, but they're worse when it comes to Welsh-medium recruitment.