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Примечания: 

vseslavrus в посте Metapractice (оригинал в ЖЖ)

1. Back out - 1. To move backwards out of a place or enclosure.
2. To emerge:
1. to become manifest ; become known
2. to rise from or as if from an enveloping fluid ; come out into view
3. to rise from an obscure or inferior position or condition
4. to come into being through evolution