地球，人間煉獄：疫情、戰爭、窮困 (258期)：
"零缺點" (品質運動中的ZD ，ZERO DEFECTS ) 到 COVID-19防疫的"清零運動"，火入魔的故事........
https://www.facebook.com/hanching.chung/videos/514492353544850
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"If we really emphasise zero Covid, indeed it will be very difficult to achieve, and it may have a large impact on the economic sector." Ivan Hung - chief of the Division of Infectious Diseases in the University of Hong Kong's medical faculty - said.
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