The collision and fusion of language and language is part of cultural communication. Today in the world, this communication is becoming more frequent and faster, but from the perspective of a language itself, it always has to maintain the essence of the past and absorb it. External factors that would otherwise fail to convey a new reality. In this passage, "collision and fusion of language" mean? ['Absorption of one language by another.', 'Different languages interact with each other and absorb each other.', 'Take the essence of foreign language and remove its dross.', 'Not only maintain the essence of the native language, but also absorb the reasonable elements of the foreign language.']