caveat

1. N-COUNT A caveat is a warning of a specific limitation of something such as information or an agreement. 警告; 提醒[正式] [oft N that]

There was one caveat: he was not to enter into a merger or otherwise weaken the Roche family's control of the firm. 提醒一下：他不是要参与并购或其他削弱罗技家族对该公司控制的行动。