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来源:雅诚德英语网
One sneeze can put as many as 40,000 droplets of saliva and mucus into the air.
一个喷嚏可以将多达40000滴唾液和黏液喷到空气中。
One sneeze can put as many as 40,000 droplets of saliva and mucus into the air.
一个喷嚏可以将多达40000滴唾液和黏液喷到空气中。