1·Tropical plants like their surroundings bright and humid, while cacti need sunlight but very little water.
热带植物喜欢明亮且潮湿的环境，而仙人掌需要光照但只需要很少的水。
2·But they are surrounded by botany: palm trees, cacti, all kinds of plants and flowers.
但是他们被植物所环抱：棕榈树，仙人掌和各种各样的树还有鲜花。
3·Some cacti, like the saguaro, grow to tree size, but true trees need more moisture than most desert environments can supply, so they are scarce on deserts.
一些仙人掌，如撒瓜罗，能长到象树那么高。但真正的树却需要比大多数沙漠所能提供的更多的水份，所以树在沙漠里是鲜见的。
4·Plant large cacti at the back of the garden.
将植株较大的仙人掌种在花园的后部。
5·Plants do best in the light and temperature of their native environment. For instance, tropical plants like their surroundings bright and humid, while cacti need sunlight but very little water.
植物在光照和适于它们的自然环境下的温度中生长得最好，比如：热带植物喜欢明亮且潮湿的环境，而仙人掌需要光照但只需要很少的水。