a vigorous young man的用法和样例：
- Leo, it is true, had been half drowned, but that is no great matter to a vigorous young athlete of five-and-twenty.
- The salesman was a very personable young man.
- He has grown into a young man of twenty-two.
- He was known to be a young man with lofty ideals.
- He is a the most brisk young man in this group.