他们立即断然采取了行动。

They leapt into action immediately.

《牛津词典》

他们立即打电话叫救护车。

They rang for the ambulance immediately.

youdao

孩子们答应每天给奶奶写一封信，所以他们立即开始了他们的任务。

The children had promised to write a letter to grandmama every day, so they immediately started on their task.

youdao

They don't expect to get their money out of an investment right away.

他们也不想立即收回投资

耶鲁公开课 - 金融市场课程节选