It has offered many of us comforts we could only dream of, 这提供了我们梦寐以求的舒适生活
In the united states, only three million farmers are left. 在美国 只剩三百万农民
But worldwide only three percent of farmers have use of a tractor. 但是世界上仅百分之三的农民使用拖拉机
Children are a family's only asset, 孩子是家庭的唯一资产
Taking from the earth only the strictly necessary. 仅仅向地球索取必需品
But the only energy at their disposal was provided by nature... 但是他们唯一可以支配的能量来源于自然
They are the only natural element 他们是唯一不断向天空生长的
And exists only through the existence of another being. 只能通过其他事物的存在而存在
And we humans only 200,000 years ago. 而我们人类诞生于20万年前