In recent years, with proliferation of products such as Purell, instant hand sanitizers have become popular.
近年来，随着Purell这种清洁产品的流行，越来越多的人开始使用方便的无水洗手液。
In the experiment, 11 participants used the hand sanitizer Purell once every five minutes during three 10-hour days.
在实验中，11个参与者在10个小时内每五分钟使用一次普瑞来洗手液，连续三天。
In the experiment, 11 participants used the hand sanitizer Purell once every five minutes during three 10-hour days.
在实验中，11个参与者在10个小时内每五分钟使用一次普瑞来洗手液，连续三天。
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