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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