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他不知道其出处。用英语怎么说？

他不知道其出处。

He had no idea of its provenance.

相关词汇
he had no idea of its provenance

he

pron. 他，它，一个人；n. 雄性动物；

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

no

adv. 不，否，一点也没有；adj. 没有的，不许的，一点儿也没有，决不是的；n. 不，否定，否认，反对票，否决票；abbr. 数字(number)，元素锘(nobelium)的符号；

idea

n. 主意，想法，[哲]理念，观念，[乐]乐句，模糊想法；

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

its

pron. (it的所有格形式)它的，厥；

provenance

n. 起源，出处；
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