If an idea or feeling expresses itself in some way, it can be clearly seen in someone's actions or in its effects on a situation.
(想法、情感) 流露; 呈现
An express or an express train is a fast train that stops at very few stations.
快速列车
If you refer to an express intention or purpose, you are emphasizing that it is a deliberate and specific one that you have before you do something.
特定的 (意图、目的)
He has expressly forbidden her to go out on her own.
他已明确禁止她独自外出。