One reason this is hard is that radio telescopes must chop the spectrum into fine portions to study it, like tuning into a signal on a car radio.

Open tomato can, heat it and season (if necessary). Chop some onion and melt some cheese in it would be fine.

So the Woodman took his axe and began to chop down small trees to make a raft, and while he was busy at this the Scarecrow found on the riverbank a tree full of fine fruit.