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A cubic kilometer of seawater, go into the ocean and imagine a box .
一千立方米的海水，想象一下一个体积为一千立方米的盒子。
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You get that out of 1 cubic kilometer of seawater.
你能从一千立方米海水中得到这么多。
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If you get--They really count the number of cubic centimeters of saliva.
图标记录了分泌出的唾液量。
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$firstVoiceSent
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