变换

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The Chinese word "变换" (biàn huàn) is composed of two characters: "变" (biàn) and "换" (huàn). The character "变" means "to change" or "to transform," while the character "换" means "to exchange" or "to replace." Together, the two characters form the word "变换," which means "to change" or "to transform."The word "变换" can be used in a variety of contexts. For example, it can be used to describe the changing of the seasons, the transformation of a caterpillar into a butterfly, or the changing of one's mind. It can also be used in a more abstract sense, to describe the changing of one's thoughts or feelings.The word "变换" is a common word in Chinese, and it is used in both spoken and written language. It is also used in a variety of idioms and proverbs. For example, the idiom "沧海桑田" (cāng hǎi sāng tián) means "the sea changes into mulberry fields," and it is used to describe a dramatic change. The proverb "一成不变" (yī chéng bù biàn) means "unchanging," and it is used to describe something that never changes.The word "变换" is a versatile word that can be used in a variety of contexts. It is a useful word to know for HSK learners, as it is a common word that is used in both spoken and written language.