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look around▼(to inspect a building or area)
verb
[UK: lʊk ə.ˈraʊnd] [US: ˈlʊk ə.ˈraʊnd]

look back▼(look behind oneself)
verb
[UK: lʊk ˈbæk] [US: ˈlʊk ˈbæk]