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"I saw him" is a phrase which is often translated as "lo vi", and "I saw it" is a phrase which is also often translated as "lo vi". Learn more about the difference between "I saw him" and "I saw it" below.
I saw him()
A phrase is a group of words commonly used together (e.g., once upon a time).
I saw it()
A phrase is a group of words commonly used together (e.g., once upon a time).