So scientists thought that the monkeys might be “sentinels” for human lead exposure.
据此，科学家们料想，这些猕猴能够作为指示人居环境铅污染的“哨兵”。
Scientists say that the smoke may lead to cancer.
科学家说过烟尘会导致癌症。
The scientists believe their findings could lead to an anticancer drug.
科学家们相信他们的发现可能催生一种抗癌药物。
Scientists advise people to lead a healthy lifestyle, but most people continue with unhealthy activities.
科学家建议人们过健康的生活，可是大部分人还是继续参与不健康的活动。
Scientists advise people to lead a healthy lifestyle, but most people continue with unhealthy activities.
科学家建议人们过健康的生活，可是大部分人还是继续参与不健康的活动。
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