【樹懶不二家】評論
(C)The early stages of the mass vaccination campaign have been a mess, far behind schedule and full of frustration for people to try to get shots. 大規模疫苗接種運動的早期階段一團糟，遠遠落後於計劃，讓人們嘗試接種疫苗充滿挫敗感。(A) mass：(adj.)大規模的、(n.)大量、(n.)團/塊、(n.)質量、(n.)彌撒曲、(v.)集中(B) math：(n.)數學(C) mess：(n.)雜亂、(n.)混亂局面、(n.)軍隊食堂、(v.)弄亂(D) meth：(n.)甲基安非他命/冰毒