随着时间的推移，这种方法已经使吸烟人数有所下降——自20世纪70年代以来，吸烟人数几乎减少了一半。

This approach has led over time to a fall in smoking with numbers having roughly halved since the 1970s.

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世卫组织是否预期本次大流行的严重程度会随着时间的推移而发生变化？

Does WHO expect the severity of the pandemic to change over time?

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随着21世纪的推移，科学水平越来越高了。21世纪已经有了克隆机了。 罩。

With the passage of the 21st century, the scientific level is getting higher and higher. In the 21st century, there has been a cloning machine.

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