I've been skating since nine o 'clock.

自9点钟以来，我一直都在滑冰。

youdao

Society is like a large piece of frozen water; and skating well is the great art o social life.

社会就像是一大块的冷冻水和滑冰好是伟大的艺术社会生活。

youdao

I have been skating since eight o 'clock.

自从八点开始，我就已经滑冰了。

youdao

I have been skating since nine o 'clock.

我从九点起一直在滑。

youdao

I have been skating since nine o 'clock.

我从九点起一直在滑。

youdao