You must study harder and harder, otherwise entering college may prove to be a castle in the air.

你学习必须努力，否则上大学可能是空中楼阁罢了。

youdao

You must study harder and harder, otherwise entering college may prove to be a castle in the air.

你学习必须努力，否则上大学可能是空中楼阁罢了。

youdao