Assistant Director-General for Health Security and Environment at the World Health Organization, Dr.Keiji Fukuda, urged people to practice good hygiene, including washing their hands and covering their mouth when they cough, and if they become sick to stay home.

VOA: standard.2009.04.29

And yet,there he is,going back to bathroom,washing his hands again.

但他还是会到洗手间一次次洗手。

耶鲁公开课 - 死亡课程节选

And yet,there he is,going back to bathroom,washing his hands again.

但他还是会到洗手间一次次洗手。

耶鲁公开课 - 死亡课程节选