眼泪不仅能使你的眼睛保持湿润，它们还含有一种物质，可以杀死某些细菌，使它们不会感染你的眼睛。
Not only do tears keep your eyes lubricated, but they also contain a substance that kills certain bacteria so they can't infect your eyes.
其他改变包括加入糖和湿润剂，这样减少了吸烟时的干燥和焦灼感，使吸烟成为更愉悦的经历——尤其是对新烟民而言。
Other additions, such as sugar and "moisture enhancers," reduce the dry, burning sensation of smoking, making it a more pleasant experience - especially for new cigarette smokers.
其他改变包括加入糖和湿润剂，这样减少了吸烟时的干燥和焦灼感，使吸烟成为更愉悦的经历——尤其是对新烟民而言。
Other additions, such as sugar and "moisture enhancers," reduce the dry, burning sensation of smoking, making it a more pleasant experience - especially for new cigarette smokers.
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