1. 再没有比为了朋友，而放弃生命更大的爱。There is no greater love than to give up life for the sake of friends.

2. 瞬间一天，转眼一年。A day in a flash, a year in a flash.

3. 世界上没有永远的恋人，只有永远的朋友。There are no forever lovers in the world, only forever friends.

4. 友谊是朋友之间海枯石烂的约定。The friendship between friends is an unbreakable bond.

5. 天若有情天亦老，动我闺蜜全干倒。Heaven can be overturned, my bestie dry down.

6. 世上友谊本罕见，平等友情更难求。The world of true friendship is rare, and equality in friendship is even harder to find.

7. 友谊是一种和谐的平等。Friendship is a kind of equality of harmony.

8. 择友宜慎，弃之更宜慎。Friends should be chosen carefully, and abandoned even more so.

9. 朋友是亲密的永久伙伴。A friend is a permanent intimate companion.

10. Between friends all is common. 朋友之间不分彼此。

11. Life without a friend is death. 没有朋友，虽生犹死。

12. Misfortune tests the sincerity of friends. 患难见真情。

13. Old friends and old wines are best. 陈酒味醇，老友情深。

14. A friend is never known till a man has need. 不到患难时，永远不能认识真正的朋友。

15. A friend is not so soon gotten as lost. 交友慢，失友快。

16. A friend to everybody is a friend to nobody. 广交友，无深交。

17. A friend without a friend is a lonely soul. 没有朋友的人是一个孤独的灵魂。

18. 与朋友交，言而有信。Make friends and be trustworthy.

19. 卑鄙与狡诈的开始，就是友谊的终结。The beginning of despicability and cunning is the end of friendship.

20. 浇树浇根，交友交心。Water trees and roots to make friends.

21. To find friendship offer friendship. 以友谊换友谊。

22. True friendship lasts forever. 真正的友谊恒久不变。

23. Friendship is like wine---the older the better. 友谊像美酒，越陈越醇厚。

24. Fire is the test of gold, and adversity is the test of friendship. 烈火见真金，患难见真情。

25. Friendship the older it grows the h2er it is. 地久天长。

26. A friend is best found in adversity. 患难见真友。

27. A true friend is a treasure for life. 真正的朋友是生命中的宝藏。

这些句子涵盖了友谊的多个方面，包括其珍贵性、忠诚、平等、互助以及在困难时期的价值。希望这些句子能够帮助你更好地理解和表达友谊的重要性。