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But smallpox was, at one time, one of the most frightening diseases on the planet.
但是天花曾经,是这个星球上最令人恐惧的疾病之一
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$firstVoiceSent
- 来自原声例句
But smallpox was, at one time, one of the most frightening diseases on the planet.
但是天花曾经,是这个星球上最令人恐惧的疾病之一
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