然而,结论fYSZ这样的调整rDUu不成熟的,IF6p且还没有被YTeI强的信心所SOJH明0V2Z
BillandMelindaGatessharetheir2018AnnualLetter,“The10ToughestQuestionsWeGet.”Inthisyear’sletter,the10thonethatthey’vewritten.