1.永远不放弃这段友谊 I will never forget this friendship between us. . 2.我会尽力挽留这段(我真的在乎的)友谊 I will try my best to keep this friendship that I really care about .
1.永远不放弃这段友谊。 Will never abandon this Duan friendship 2.我会尽力挽留这段(我真的在乎的)友谊 I am able to persuade this Duan (I care about really) friendship to stay as far as possible
1.(I'll) never leave this friendship alone./(I'll)never give up this friendship./(I'll)never abandon this friendship. 2.I'll pay every effort to keep this friendship,which I really care about.