Japanese phrase
交換しましょう。 kō kan shi ma shō
Meaning
Let's exchange.
When to use it
Proposes swapping something with another person. It is a polite way to suggest an exchange after both sides understand what will be shared.
Example dialogue
連絡先、交換しますか？ ren raku saki kō kan shi ma su ka
Shall we exchange contact details?
はい、交換しましょう。 ha i kō kan shi ma shō
Yes, let's swap them.