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Last updated at 13:45 BST, Monday, 08 October 2012

Inside out

A plastinated goat

A plastinated goat. Photo: Miro Kuzmanovic/Reuters

Today's Phrase

If something is inside out, it literally means that it is reversed, with its inner parts on the outside. You can also know something inside out, which means you know it very well.

For example:

If you'd like a tour of Paris, I can take you. I know the city inside out.

Gary knows the history of Manchester United inside out.

I feel prepared for my French exam. I've been revising all night and I know the vocabulary inside out.

Don't confuse it with

If something is turned upside down, it means that it becomes disorganised and chaotic, or thrown into confusion.

Katy's world was turned upside down when her boyfriend left her, she didn't know what to do.

Interesting fact

Plastination is a technique used to preserve bodies after death. It was developed by Gunther von Hagens in 1977, and replaces water and fat in the body with plastics. A recent exhibition called "Animals Inside Out" includes a shark, bear and octopus, as well as the goat pictured above, and allows visitors to see and touch the insides of the animals.

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