You must be ready to leave at a moment's notice.

你必须随时准备出发。

《牛津词典》

To succeed, you must be ready when opportunity comes.

为了成功，你必须在机会来自前准备好。

youdao

We must be ready to respond quickly to contain any outbreak.

我们必须作好准备，对遏制任何暴发作出迅速反应。

youdao

We must prepare to fight and we must be ready to flee.

VOA: special.2010.07.17

So it really does open up a new world of learning, Warren says when it comes to HIV/AIDS, people must be ready to be surprised.

VOA: standard.2010.07.15

The top team must be ready to make people choices quickly and facilitate team-building.

FORBES: Big Deal: Reflections on the American and US Airways Megamerger

"Every democrat must be ready to die for truth and freedom, " said Ms Joya.

BBC: Malalai Joy, Afghan MP

We must be ready for the 21st century from its very first moment, by solving the "Y2K" computer problem.

CNN: Prepared Text of Clinton's State of the Union speech