高中英语句子求翻译,there was this old man who must have been usefully engaged perhaps before the sun appeared above the horizon

Young as I am – just sixteen ,and there was this old man who must have been usefully engaged perhaps before the sun appeared above the horizon.
以后把上下文也贴出来.
不然不好翻的,请注意.
我才16岁,这么年轻.这位耄耋老人却在日出之前就已经开始忙碌了.