Boxing and Running
Dan is teaching his son how to box. As he does so, he left his friend, "This is a tough world, so I’m teaching my boy to fight."
Friend: "But suppose he comes up against someone much bigger than he is, who’s also been taught how to box."
Dan: "I’m teaching him how to run, too."

拳擊和賽跑
丹在教他的兒子怎樣拳擊。他告訴他的朋友：“這是一個粗暴的世界，所以我要教我的兒子怎么去拼搏?！?br> 朋友：“如果他碰上的對手是一個比他高大，健壯而且也會拳擊的人怎么辦？”
丹：“我也會教他怎么樣賽跑呢。”

NOTE
come up against 遇到一個對手 against表示相對的相反的