If you have a basement or attic, separate laundry attached etc. ensure there is a difficult and visible lock preventing them from entering the main house also.
The most visible, difficult thing I've had to do is cancel a season.
"In painting as in music and literature," she wrote, "what is called abstract so often seems to me the figurative of a more delicate and difficult reality, less visible to the naked eye".
She never understood why readers found her work opaque, while the fact that she consistently attempted new things in her writing was, for her, simply necessary to her aim: "In painting, as in music and literature, what is called abstract so often seems to me the figurative of a more delicate and more difficult reality, less visible to the naked eye".
Dyes are usually highly visible, very difficult to biodegrade, and extremely difficult to eliminate in natural aquatic environments [3, 4].
Features in the clouds are difficult to see in visible light.
Tchotchkes littered every surface, drawers were overstuffed to the point of being difficult to open, and visible wall space was pretty much nil.
"Most prices were not visible or difficult to find, and we found certain items stacked high on storage racks while their shelf spots remained empty".
This will be far more difficult: the wavelengths of visible light are more than 10,000 times smaller than those of microwaves, meaning that the corresponding metamaterials would have to be equally reduced in size.
Before then, astronomers had known little about the planet, since its distance from Earth makes the study of its visible surface difficult even with the most powerful telescopes available.
