def pick_and_place(self, objecttype, receptacletype):
    # Check if the agent is already holding the object
    if self.name2type(self.holding) == self.name2type(objecttype):
        # If the agent is holding the object, find the destination receptacle
        destination = self.find_receptacle(receptacletype)
        if destination is None:
            # If the destination receptacle is not found, explore the environment
            self.explore()
            return  # Return for the next decision-making after exploration
        else:
            # Go to the destination receptacle
            self.goto(destination.name)
            # Place the object into the destination receptacle
            self.put(self.holding, destination.name)
            return  # Return for the next decision-making after placing the object
    else:
        # If the agent is not holding the object, find the object
        entity = self.find_object(objecttype)
        if entity is None:
            # If the object is not found, find receptacle types that can contain the object
            r_types = self.find_canbe_contained(objecttype)
            if r_types is None:
                # If no receptacle types are found, explore the environment
                self.explore()
                return  # Return for the next decision-making after exploration
            else:
                # For each receptacle type, check if the object is in the receptacle
                for r_type in r_types:
                    r_entitys = self.find_receptacles(r_type)
                    if r_entitys is None:
                        # If the receptacle is not found, continue to the next receptacle type
                        continue
                    for r_entity in r_entitys:
                        self.goto(r_entity.name)
                        if r_entity.openable and not r_entity.isopen:
                            self.open_receptacle(r_entity.name)
                            return  # Return for the next decision-making after opening the receptacle
                        if r_entity.name == entity.in_on:
                            # If the object is found in the receptacle, take the object
                            self.take(entity.name, entity.in_on)
                            break  # Exit the loop after taking the object
                # If the object is not found, explore the environment
                self.explore()
                return  # Return for the next decision-making after exploration
        else:
            # If the object is found, go to its receptacle and take it
            self.goto(entity.in_on)
            r_entity = self.seen_entitys[entity.in_on]
            if r_entity.openable and not r_entity.isopen:
                self.open_receptacle(r_entity.name)
            self.take(entity.name, entity.in_on)
            # Find the destination receptacle
            destination = self.find_receptacle(receptacletype)
            if destination is None:
                # If the destination receptacle is not found, explore the environment
                self.explore()
                return  # Return for the next decision-making after exploration
            else:
                # Go to the destination receptacle
                self.goto(destination.name)
                # Place the object into the destination receptacle
                self.put(self.holding, destination.name)
                return  # Return for the next decision-making after placing the object