On the one hand, it's a necessary condition 1 many worthwhile things: child care, friendships, etc. On the other hand, putting your 2 in the wrong place often carries a high 3 .
一方面，它是许多有价值事物的必要条件：育儿、友谊等。另一方面，将你的2放在错误的地方通常会带来很高的3。
What WhatsApp offered Facebook was an intricate and finely detailed web of its users’ friendships and social lives.
WhatsApp为Facebook提供的，是其用户之间复杂而细致的友谊和社会生活网络。
Another measure could be encouraging friendships between children in different school years to mimic the supervised mixed-age playgroups in hunter-gatherer communities.
另一种措施可以是鼓励不同年级的孩子建立友谊，以模仿采集狩猎社会中由成人监督的混龄游戏小组。
例句取自历年考研英语真题，翻译为机器生成，仅供学习参考。