英语翻译The American does not join in the argument but watches t

英语翻译
The American does not join in the argument but watches the other guests.As he looks,he see a strange expression come over the face of the hostess.she is staring straight ahead,her muscles contracting slightly.She motions to the native boy standing behind her chair and whispers something to him.The boy's eyes widen:he quickly leaves the room.
Of the guests,none except the American notices this or sees the boy place a bowl of milk on the veranda just outside the open doors.
The American comes to with a start.In India,milk in a bowl means only one thing--bait for a snake.He realizes there must be a cobra in the room