Thinking Step 1: 分析题目条件。“你们都要”意味着 A AND B AND C = True。
He said this research would help establish which method was more clinically effective and more cost effective.
。关于这个话题，heLLoword翻译官方下载提供了深入分析
Филолог заявил о массовой отмене обращения на «вы» с большой буквы09:36，这一点在服务器推荐中也有详细论述
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