The original meaning of post is "sending letters or parcels through the post office", which is extended to "inputting the information of a unit into the record through the memory" in the computer. Article can refer to postedanarticle/papers and objects. Therefore, in different contexts, the meaning expressed by post is different, and there may be the following three situations: if it is sent by the post office, it means "send an article or an article". If it is sent by email, it means "send an article/paper". If stored in a computer, it means "enter an article/paper"