The present invention provides a semiconductor structure and the forming method thereof. The cushion is divided into an upper cushion and a lower cushion by an intermediate diaphragm. The bending portions of neighboring sliding plate portions of the plurality of sliding plate portions are opposite to each other at predetermined intervals and are held in one surface of the supporting plate portion, and the engaging and disengaging member fits into concave portions formed between the bending portions. The n-gram probabilities for the words of the collection represent the language model of the collection.