They paddled their canoe cautiously upstream.
She was rowing for all she was worth.
She rowed with a powerful stroke.
adj.infmlbe to one's profit; be worth it; profitable
It is worthwhile.
It doesn't pay to grow feed crops on such good soil.
v.scratch or cut the surface of something with a sharp object
cut a piece of glass
A flash of lightning streaked across the sky.
I've scratched my foot.