What's invention? Give the definition of the word, How do people invent things?, Have you ever thought about inventing anything?, What is the coolest invention ever?, What do you think an inventor’s life is like?, What is the world’s most dangerous invention?, What question would you like to ask an inventor?, What is the world’s most useless invention?, What does ‘necessity is the mother of invention’ mean? Do you agree with it?, What invention would you like to invent?.

Inventions

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