We fear the breakdown of the electric grid, the end of non-renewableresources, the expansion of deserts, the loss of islands, and the pollution of our air and water.
我们担心电网会崩溃、不可再生资源会枯竭、沙漠会扩张、岛屿会消失、空气和水会受到污染。
2
So engineers look for renewableresources that are as dense as possible.
因此，工程师们寻找尽可能密集的可再生能源。
3
Renewableresources can’t yet begin to replace coal as providers of power.