This step was taken by Italian biologists, who provided the last missing link in man's search for the cause of malaria.
意大利生物学家完成了这一步骤，从而填补了人类探索虐疾病因所缺少的最后一个环节。
This step was taken by Italian biologists, who provided the last missing link in man's search for the cause of malaria.
意大利生物学家完成了这一步骤，从而填补了人类探索虐疾病因所缺少的最后一个环节。
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