fly up and down的意思|示意

It is also a place of fun. Running down a dune is easier than trekking up it, especially when you bound in great leaps and fly through the air.

这里也是一个好玩的地方，奔下沙丘要比跋涉向上容易得多，特别是你大步跨越时，飞越空中的时候。

They fly down from the sky or scale up the building and linger there.

他们从天空中飞下，或者攀登上建筑物，在那里留恋徜徉。

The birds fly up and down happily, just like small black seaplanes. Besides them, the arrival of the wild ducks, at much higher speed, is almost majestic3.

湖上的鸟儿，快乐地上下翻飞，恍如成群的黑色水上小飞机，忙个不停，除此之外，飞来的野鸭子速度相对迅捷得多，极为壮观。

The birds fly up and down happily, just like small black seaplanes. Besides them, the arrival of the wild ducks, at much higher speed, is almost majestic.

湖上的鸟儿，快乐地上下翻飞，恍如成群的黑色水上小飞机，忙个不停，除此之外，飞来的野鸭子速度相对迅捷得多，极为壮观。

Running down a dune is easier than trekking up it, especially when you bound in great leaps and fly through the air. We return to the train for showers and coffee like happy Bedouins.

这里也是一个好玩的地方，奔下沙丘要比跋涉向上容易得多，特别是你大步跨越时，飞越空中的时候。

As you fly up and down the river, you'll see a lot of people have already abandoned their houses and moved to higher ground.

当你在河流中飘来飘去，你会看到很多人放弃了自己的房子，搬到地势较高的地方。