обугливание
carbonisatio [onis, f];
энергия
energia [ae, f];
временами
olim; interdum; subinde;
rugare [1];
cutem adducere [o, xi, ctum];
in rugas replicare [1];
cuti rugas inducere;
+ наморщить лоб frontem corrugare [1] / contrahere [o, xi, ctum] / astringere [o, nxi, ctum];