その慣習は守らなくてはならない。
Sentence Analyzer
English Translation
        That institution must be protected.
    
Furigana
        その慣習 は守 らなくてはならない。
    
Romanji
        Sono kanshū wa mamoranakute wanaranai.
    
Words
            
                其の
            
            
                (その)
            
        
        
            that (something or someone distant from the speaker, close to the listener; actions of the listener, or ideas expressed or understood by the listener); the; um...; er...; uh...
        
    
            
                慣習
            
            
                (かんしゅう)
            
        
        
            usual (historical) custom
        
    
            
                は
            
            
                (は)
            
        
        
            topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis
        
    
            
                守る
            
            
                (まもる)
            
        
        
            to protect; to guard; to defend; to keep (i.e. a promise); to abide (by the rules); to observe; to obey; to follow
        
    
            
                ば
            
            
                (ば)
            
        
        
            if ... then; when; and; why don't you...?; the more (one does something); because; since