每个人都需要朋友和友谊。
大象会建立长期的友谊，多年后仍然能记住和认出它们的朋友。
Elephants establish long-term friendships, recognizing and remembering their friends years later.
很多青少年一旦和一些人成为朋友，便试图不失去友谊。
A lot of teens try not to lose the friendship once they become friends with some people.
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