US Airways says that its blankets are washed at least every five days regardless of condition.

USAirways则说它至少每五天就要对毯子进行清洗，不管它们脏不脏。

youdao

For example, a program that will allow us to log onto a social networking site for only 15 minutes per day, or only once every five days.

譬如，一个只允许我们每天登入社交网络站点15分钟，或是每5天登入1次的程序。

youdao

For example, a program that will allow us to log onto a social networking site for only 15 minutes per day, or only once every five days.

譬如，一个只允许我们每天登入社交网络站点15分钟，或是每5天登入1次的程序。

youdao