Translate the given Spanish text to English

Example Input: A portable excrement bag comprises a bag body (10).
Example Output: Una bolsa para excremento portátil comprende un cuerpo de bolsa (10).

Example Input: The second arm portion is pivotably connected to the walls.
Example Output: La segunda porción del brazo se conecta en pivote a las paredes.

Example Input: ?m-1.
Example Output:
?m-1.