Smiles are a bridge to friendship.
Meaning: Smiling can help people become friends because it shows that you are friendly and approachable.
Choice of Words: A bridge is a structure built over a body of water, like a river, to allow people or vehicles to cross it. Friendship is a close relationship between two or more people. When you say "Smiles are a bridge to friendship," it means that smiles can help people become friends.
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