The mother will be trapped here for the next five months 母座头鲸接下来要困在这里大约5个月
The playful calf is now drinking five hundred liters of milk a day 顽皮的小座头鲸每天要喝500公升奶
three hundred and sixty five days a year, it's here that rainforests flourish. 一年365天天天如此,造就了这里茂密的雨林
Five million birds make this journey every year. 每年有五百万只雪雁都是这样迁徙
Some flocks are so vast that they can take five hours to pass overhead. 这些鸟数量众多 让它们从你的头顶上飞过要花5个小时
Their mother stretches her legs after five months under the snow. 它们的母亲在雪下呆了5个月后终于可以出来伸伸腿
means that desert elephants can only refill their tanks once every four or five days. 意味着沙漠里的大象 只能每隔四五天喝饱一回
When full, a saguaro stem can store up to five tonnes of water 吸饱水后 弁庆柱的茎干中 已储存了5吨左右的水
Every hour the temperature rises by five degrees centigrade. 每过一小时 气温就将升高5℃
For five months of the year it's sealed by an ice sheet over a metre thick. 每年中总有5个月 湖面被1米厚的冰层覆盖