express prevent explain
When the dish arrives,he is  shocked  to discover that "steak tartare" is  actually  a raw hamburger.He  makes  an attempt to eat it,but it is  clear  ,from the look on his face,that he finds the taste really terrible.He cannot  [MASK]  his feelings,except when the waiter asks whether everything is OK.He smiles and nods,  indicating  that everything is fine.