人类居室的好伴侣（陈华湘）在仙人掌类植物的老家是干旱少雨的荒原，夏天，白天的酷热天气逼得蜥蝎等爬虫都躲进石缝深处避暑，不敢抛头露面出来觅食。仙人掌类植物为了减少受热面积，便把叶片退化为针刺状，其中仙人掌、蟹爪兰、昙花、令箭荷花等，把茎变成肥厚扁平的肉... A good companion to human living room (Chen Huaxiang) The home of cactus plants is arid and rainy wasteland. In summer, the hot daytime weather forced lizard scorpions and other reptiles to hide in the depths of stone crevices and avoid looking for food. Cacti plants in order to reduce the heating area, then the leaves degenerated into acupuncture, which cactus, shish kelp, Epiphyllum, so that Arrow Lotus, the stem into a fat flattened meat ...