知乎,让每一次点击都充满意义 —— 欢迎来到知乎,发现问题背后的世界。 Early 70s scifi novel about underground people, caste is set by the color of one's poncho, and everyone eats mouldy grain Similarly, in case you are Uninterested in one-night time stands, dating applications that set a bigger emphasis on swiping than on matching up appropriate people are https://mixbookmark.com/story5750927/getting-my-find-friends-app-to-work