Developing and maintaining healthy friendships involves give and take .

发展并维持健康的友谊包括给予和获得。

Lifelong friendships and rivalries persist largely between classmates rather than childhood neighbors .

终身的友情与敌意不再存在于儿时伙伴之间，而是存在于同学之间。

Opposite-sex friendships may also harm romantic relationships .

异性友谊也可能伤害浪漫关系。

Do some friendships turn into romantic relationships ?

有没有一些友谊转化成浪漫史呢？

Friendships provide a sense of belonging and comfort .

友谊提供了归属感和舒适感。