在它（漂流瓶）横渡了几个大洋后，由于邮局对“按所需邮资贴邮票”的严格规定，意味着贝丝永远都收不到麦克斯的最后一封信
After it had crossed a few oceans, the postal service's strict rules for correct postage, meant that Beth never got Max's final letter