In this dream, the oak tree met the mayfly.

梦里，橡树还看到了蜉蝣。

The mayfly said, Come play here. It is such a happy place.

蜉蝣说，来这里玩吧。这是一个快乐的地方。

Mayflies come out of rivers or streams where they develop to mate.

蜉蝣从河流或溪流中孵化出来进行交配。

In North America, more than 150 different types of mayflies are used for making lures.

在北美有一百五十多种蜉蝣可以被用作诱饵。

The oak tree was very pleased indeed to see the mayfly.

看到蜉蝣橡树着实高兴。

Also abundant were mayflies and caddis flies. These invertebrates are indicators of a healthy aquatic ecosystem.

也有大量的蜉蝣和石蛾。这些无脊椎动物是健康水生生态系统的标志。

Eventually, the mayfly leaned on the oak tree and fell asleep.

最后，蜉蝣靠在橡树身上睡着了。

The appearance of the mayfly in spring is an astonishing sight, but it doesn't last long.

春天里蜉蝣的出现蔚为壮观不过这不会持续很久。

No. I live much longer than you do. The mayfly nodded and asked, Really? Then, are you happy now?

不是，我比你活得要久得多。蜉蝣点点头问，真的吗？那么，你现在幸福吗？

Well, it isn't really, because, as any trout may tell you, the mayfly lives a double life.

其实并非如此任何鳟鱼都会告诉你蜉蝣过着双重生活。