他 / 心中 / 有 / 个 / 隐秘难言 / 的 / 苦衷 / 始终 / 不愿 / 向 / 家人 / 提起他心中有个隐秘难言的苦衷,始终不愿向家人提起。He harbored an inexpressible distress in his heart and never wanted to mention it to his family.