The date of manufacture of the jewellery has not been authenticated.
这些珠宝制造日期尚未经证。
The date of manufacture of the jewellery has not been authenticated.
这些珠宝制造日期尚未经证。
The museum made the mistake of accepting the painting before it had been authenticated.
博物馆在还未确认这幅画性之前就错误地把它接受了。
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