The letter has been authenticated by handwriting experts. 这封信已由笔迹专家证明是真的。 The date of manufacture of the jewellery has not been authenticated. 这些珠宝的制造日期尚未经证实。 来自《简明英汉词典》 60 vigor n.活力,精力,元气 参考例句: The choir sang the words out with great vig...