By the year 2025 the number of smokers worldwide is expected to increase by 45%.
到2025年,预计世界范围吸烟人数,将增长45%
If you run these curves only on non-smokers you get rid of that J at the end of the curve and you get pretty much a function that's to the right of the curve here.
如果仅在不吸烟人群中做统计,那么左末端就不会出现J形曲线,而是会得到一条,从左到右逐渐上升的完美的函数曲线
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