手の内を見せるべきです。
Sentence Analyzer
English Translation
        You should lay your cards out on the table.
    
Furigana
Romanji
        Tenouchi o miseru beki desu.
    
Words
            
                手の内
            
            
                (てのうち)
            
        
        
            palm (of one's hand); skill; scope of one's power; one's intentions; one's plan; one's hand (mahjong, card games, etc.)
        
    
            
                を
            
            
                (を)
            
        
        
            indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
        
    
            
                見せる
            
            
                (みせる)
            
        
        
            to show; to display
        
    
            
                可し
            
            
                (べし)
            
        
        
            shall; should; must
        
    
            
                です
            
            
                (です)
            
        
        
            be; is