The cicadas here, will not be heard again for another seventeen years. 在接下来的17年里,不会再听到布鲁德蝉的声音了
After an absence of seventeen years, the forest is now overrun by cicadas. 在17年的缺席之后 森林中的蝉泛滥成灾
They were alive before the pyramids were built and were already three thousand years old when Christ was born. 它们在金字塔建造之前就发芽了, 耶稣诞生的时候它们已经活了3000年
Some have been here for five thousand years. 有的在这里已经待了5000年
Adults can only raise young here in years when the seasonal vole crop is big enough to support them. 成鸟能在这里养育小宝宝 表示今年的田鼠够多可以养活它们
They were in their prime twenty million years ago 2000万年前它们就已经在这里
and they live for thousands of years. 寿命更可达数千年
It can take fifty years for a tree to get bigger than a seedling. 一棵树从秧苗到成年需要50年的时间
and a fifty meter giant, like this one, may keep it's place in the sun for another two hundred years. 这颗50米高的树将在剩下的200年里汲取阳光