If we're all prepared to recycle paper, thousands of trees could be saved every day.
如果纸能被循环利用,那么每天千千万万的树木就可得以挽救。
We could see that the path continued on the other side, but we had no idea how we could get across the stream.
我们可以看到小路在深溪对岸继续向前伸展,但却不知如何越过这道深溪。