When we long for life without difficulties, remind us that oaks grow strong in contrary winds and diamonds are made under pressure---Peter Marshall, American game show host and singer.
当我们想过没有困难的生活时，提醒自己，橡树迎风生长，钻石出自高压---彼得。马绍尔，美国游戏节目主持人和歌手。
You are on a game show. There are three doors. Behind one of them is a prize; the other two have coal. The host knows which door holds the prize.
假如你现在正在参加游戏节目，这里有三扇门，其中一扇门后是奖品，另外两扇门后是煤，主持人知道那扇门后藏着奖品。
You are on a game show. There are three doors. Behind one of them is a prize; the other two have coal. The host knows which door holds the prize.
假如你现在正在参加游戏节目，这里有三扇门，其中一扇门后是奖品，另外两扇门后是煤，主持人知道那扇门后藏着奖品。
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