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adj.适合正式场合的; 正规的; 庄重的; 正式的; 合乎规矩的n.须穿礼服的社交集会; 夜礼服 牛津词典 adj. 适合正式场合的；正规的；庄重的very correct and suitable for official or important occasionsformal evening dress晚礼服 The dinner was a formal affair.这是正式宴会。...
