Unless you've been touched personally, it's difficult to see, but there are millions of people who have no voice whatsoever.
除非你亲身经历过，否则很难看到，但是有成千上万的人没有任何声音。
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Difficult
除非你亲身经历过，否则很难看到，但是有成千上万的人没有任何声音。