Final answer:
The correct translation of 'Vamos a tomar una copa' is 'Let's go have a drink'.
Step-by-step explanation:
The correct translation of the expression Vamos a tomar una copa is Let's go have a drink. The phrase 'vamos a' translates to 'let's go' and 'tomar una copa' means 'have a drink'. So the full translation would be 'Let's go have a drink'.
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