Indeed, Hollywood has long been accused of glamorising smoking, and thereby encouraging people to emulate their on-screen idols.

的确，人们长期以来批评好莱坞使吸烟变得迷惑化，因此好莱坞鼓励人们效仿他们上的偶像吸烟。

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Now some experts are calling for a change in film certification so the under-18s are unable to see actors smoking on the silver screen .

现在就有一些专家呼吁应该重新调整电影分级制度，这样子确保18岁以下的青少年无法观看银幕上的抽烟场景。

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"Study after study has shown that... on-screen smoking has a powerful influence on behavior, " Fiore says.

CNN: Should smoking trigger an R rating?

Kids under the age of 18 are particularly vulnerable to images of high-wattage stars smoking cigarettes on the big screen, partly because adolescents, similar to very young children, are prone to mimic behaviors they see others trying, Sargent says.

CNN: Should smoking trigger an R rating?

PG-13 films account for nearly two-thirds of the smoking scenes adolescents see on the big screen, according to the two-year study, which surveyed roughly 5, 000 children ages 10 to 14 about the movies they'd seen and whether they'd ever tried a cigarette.

CNN: Should smoking trigger an R rating?