I am dancing into the flying cloud, singing a love song under the deep blue sky, only to you.

我动，动成飘飞的云儿，在天空中唱一首万古流芳的恋歌，唱给你听。

youdao

The plane was flying in cloud most of the way.

飞机一路大多在云层里飞行。

《牛津词典》

Having heard so many stories like this, I just feel I am like a balloon, which is seemingly flying high but is actually upheld by the cloud, and which is seemingly "full" but actually very "empty".

听多了这样的故事，便常常觉得自己像只气球，仿佛飞得很高，仔细一看却是被浮云托着；外表看上去也还饱满，但肚子里却是空空。

youdao

Two years later Captain Creesy and his wife again took the Flying Cloud from New York to San Francisco.

VOA: special.2009.12.23

The large number of sails the Flying Cloud could carry increased the speed of the ship.

VOA: special.2009.12.23

She is honored for her great skill as navigator of the Flying Cloud, one of the fastest sailing ships the world has ever seen.

VOA: special.2009.12.23

Some days, I look down and see hawks flying, and in the winter there are beautiful cloud formations.

WSJ: The House That 'Hound Dog' Built | House Call

While you would think that many months of planning are occurring at the CIO level around the use of cloud computing, most cloud computing adoption is beginning at the project level, and many of these projects are flying under the radar of traditional IT governance.

FORBES: The Great Enterprise Migration to the Cloud Begins