"愿我们的友谊地久天长" 用英文可以写为：

1. Wish our friendship last forever.

2. We would like to friendship for a long time lang syne.

3. Friendship is forever.

4. May our friendship as the Sino-British friendship lasts forever.

5. I hope that our friendship will be forever.

这些表达都传达了希望友谊长久的美好愿望。