本帖最后由 zhousht 于 2021-8-6 17:26 编辑 % c: ^1 ^( [+ f1 X - M+ R: S; Q# L8 UScientists are concerned that measures to combat Covid-19 have weakened the immune systems of young children who have not been able to build up resistance to common bugs, leaving them vulnerable when mask-wearing and social distancing eventually end. 0 {" a/ W# }% F: p* O- G( z/ Uhttps://www.theguardian.com/soci ... -system-experts-say3 a5 M5 O9 J/ e0 F$ w# x9 m- \
Lockdown最受害的是儿童。