all along意為“自始至終，一直”。如：
What were known as facts all along are not true. What are known by us now is true. 我們一直以來(lái)所知道的情況都不是真的，而現(xiàn)在知道的才是事實(shí)。
本句意為“我一直都知道！”，相當(dāng)于I knew it from the very beginning，意在強(qiáng)調(diào)對(duì)方所說(shuō)的話是對(duì)的。
