His speech strengthens the impression he is the main power in the organization.他的演讲让人更加确信他才是该组织的主心骨。Pat was a tower of strength to our whole family.帕特是我们全家人的主心骨。He had been a rock in the shifting sands of her existence.他一直是她曲折坎坷的生活中的主心骨。She was her husband's stay in all his troubles.她是她丈夫遭到任何困难时的主心骨。