The power range of the lenses is + 6 to -6 Diopters, and once the lenses are set, you take the vials off the arms of the glasses and store them for safe keeping.
镜片的焦强范围介于+ 6至—6屈光度之间，一旦确定了焦强，就可以将硅油瓶从眼镜摇臂上卸下，并将它们存放在安全的地方。
Pubs shouldn't be put under pressure to stop using glasses if they are safe places to drink.
如果属于安全饮酒场所，酒吧不应当受到任何压力停止使用玻璃杯。
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