1·One of the rarest hummingbirds, the spatuletail is found only in Peru and is unique in appearance.
最稀罕的蜂鸟之一。 叉拍尾蜂鸟外观独特，仅生活于秘鲁。
2·To live is the rarest thing in the world. Most people just exist.
在这个世界，生活是最稀罕的事。大多数人只是生存而已。
3·You could turn up a something special, like the elusive Bigfoot ant, North America's rarest ant species.
也许你能找到特别的蚂蚁，像大脚蚁，它可是北美最稀罕的一种蚂蚁。
4·To live is the rarest thing in the world. Most people exist, that is all.
“生活”是个稀罕玩意儿，大部分人只是“生存”在这世上，如此而已。
5·To live is the rarest thing in the world.
在这个世界，生活是最稀罕的事。
1·Then a couple more to the left, and more to the right, before I finally realised that I was at the centre of a pod of Irrawaddy river dolphins, one of the rarest species on the planet.
我终于意识到，自己已经在一群短吻海豚中间，这是地球上最稀有的物种之一。
2·On Earth rarest element astatine.
地球上最稀有的元素砹。
3·Even the two rarest (thulium and lutetium) are more widely spread throughout the Earth's crust than gold or platinum.
即使是最稀有的那两个(铥和镏)在全球地壳中也比金或铂要多。