站在街上，把一个纸做的大问号顶在头顶。
Stand in the street, holding a huge yellow paper made question mark over your head.
他补充道，格林兰冰盖是否会继续加速融化还是一个大问号。
Whether acceleration of melting from the Greenland Ice Sheet will continue, he added, is a big question mark.
由此，你可以猜出关于存在价值的地方大问号标在何处。
One can guess from all this just where the great question mark about the worth of existence was placed.
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