make peace with a person
修复友好关系
is it too late to mend fences with your ex-wife?.
现在与你前妻重归于好太晚了吗？。
act more politely
变得更有礼貌
improve one's habits or behaviour
改进作风
To improve poor relations, especially in politics
改善关系：改善不良关系，尤指在政治中
“Whatever thoughts he may have entertained about mending some fences with&I{[them]} were banished” (&b{Conor Cruise O'Brien})
“不管他曾有过什么&I{与他们} 改善关系的想法，这些想法都被排除了” (&b{康纳·克鲁斯·奥布赖恩})
Improving, especially in health.
健康好转