- the saguaros bloom at night to attract visitors.
弁庆柱在晚上开花 吸引了不少拜访者 - The pollen and nectar with which these flowers are loaded
这些花中装满了花粉和花蜜 - attract long-nosed and long-tongued bats.
吸引了长鼻蝠和长舌蝠 - The bats left Mexico a few days earlier to escape the heat of summer
蝙蝠数日前离开墨西哥以躲避酷暑 - and are on their way north to the southern United States.
正向北飞往美国南部 - To get there, they have to cross the Sonoran desert.
要想到达那里 它们必须穿越索诺兰沙漠 - But the desert is so big
不过这片沙漠很大