Acid test 严峻的考验

a decisive， crucial test of somethings true worths true abilities

EXAMPLE:

We liked the new manager， but we knew the acid test would be how she did when she opened our new office in San Francisco by herself.

Action item 行动要点

a specific task that is identified as needing to be done quickly， often as a top priority

EXAMPLE:

During our meeting we developed a list of specific action items for each department to accomplish before the next meeting.