How do you understand non—arbitrariness in a sente

正确答案：It is no doubt that language is arbitrarywhich is the definition of language．Howeverexpression in language is always determined and tested by reality and human experience．For examplemetaphor(snow for tree does not make sense to us)logic(old new knife seems ridiculous)ease or difficulty of sound combinationand spelling simplificationetc．As to the order of words in a sentenceyou can never say“Sit down and come in．”for both the speaker and listeners know it is against reality． 语言本身的任意性特征无可置疑那便是符号的性质。然而语言的运用却始终被客观世界和人类经验所决定和检验：如修辞(雪比喻树木基本不会被人接受)、逻辑(一把崭新的锈刀基本不被人理解)、语音组合的发音难易以及拼写简化等。至于句子中的词序我们谁都不会造这样的句子：“坐下进来。”因为那样的顺序与现实经验背离。
Itisnodoubtthatlanguageisarbitrary,whichisthedefinitionoflanguage．However,expressioninlanguageisalwaysdeterminedandtestedbyrealityandhumanexperience．Forexample,metaphor(snowfortreedoesnotmakesensetous),logic(oldnewknifeseemsridiculous),easeordifficultyofsoundcombination,andspellingsimplification,etc．Astotheorderofwordsinasentence,youcanneversay,“Sitdownandcomein．”,forboththespeakerandlistenersknowitisagainstreality．语言本身的任意性特征无可置疑,那便是符号的性质。然而,语言的运用却始终被客观世界和人类经验所决定和检验：如修辞(雪比喻树木,基本不会被人接受)、逻辑(一把崭新的锈刀,基本不被人理解)、语音组合的发音难易以及拼写简化等。至于句子中的词序,我们谁都不会造这样的句子：“坐下,进来。”因为那样的顺序与现实经验背离。