a treaty of friendship的用法和样例：
- Do not seek a treaty of friendship with them as long as you live.
- A treaty of perpetual friendship.
- Russian President Medvedev with the Abkhaz leader Bagapsh, South Ossetian leader Kokoity signed a treaty of friendship and cooperation and mutual assistance.
- They concluded a treaty of peace.
- The two sides signed a treaty of perpetual friendship.
- The two leaders signed a treaty of entente and cooperation.