)it's back to the grindstone for uscaithfimidne leagan ar an obair arís, caithfimidne aghaidh a thabhairt ar an obair arís, caithfimidne an taos a choinneáil leis an oigheann
nose to the grindstone
he kept his nose to the grindstonechuir sé a cheann faoi, d'oibrigh sé go han-chrua