She started to saw at them with the knife. The wood was thick and wet. She shifted closer, gasping when the root healed the cuts she'd just made. Furious at the latest trick from the Immortal underworld, Katie sawed furiously at the root, until her arm ached. She'd barely made a dent when she switched arms.
The resultant magnetic force at every point of such a surface is in the direction of the normal (n) to the surface; every line of force therefore cuts the equipotential surfaces at right angles.
He cuts and saws the solid pond, unroofs the house of fishes, and carts off their very element and air, held fast by chains and stakes like corded wood, through the favoring winter air, to wintry cellars, to underlie the summer there.
You don't have to buy expensive cuts of meat just because they are, but I'm sure you'd enjoy buying some meat that you don't have to play wizard on so they won't be tough.
She spins and weaves and cuts with full authority.