中國網(wǎng)站品牌欄目（頻道）
Dan is teaching his son how to box. As he does so, he?tells 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."
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