【独家发布】The Wall Street Journal(US-edition)-2016-03-05 to 06 PDF

How to Put on and Remove a Face Mask，(http://goo.gl/13jp0H)
source：San Francisco Department of Public Health

tjs very much

谢谢！

Wall Street Journal(US-edition)-2016-03-05 to 06 PD

thanks!

thank you very much for your sharing.

谢谢楼主

thanks for sharing

thank you for your sharing

许久不来了，生疏了。谢谢楼主啊。