Their origin is uncertain, but archaeologists hypothesize that they were Canaanites.

他们的起源是不确定的，但考古学家推测他们是迦南人。

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The fossil lungfish is a new species, but a name cannot be given because of its uncertain origin.

这种化石的肺鱼是新的物种，但因为它不确定的来源导致至今无法命名。

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So researchers may be able to use the sizes of the wormholes in items of uncertain origin to identify their larval attackers.

因此对于来源不确定的标本，研究人员可以通过它的虫洞尺寸来辨别的幼虫攻击者。

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The university held a formal investigation, and all anatomy specimens of "suspect or uncertain origin" were buried in a special section of the Tubingen cemetery and, on July 8, 1990, a commemorative ceremony was held.

BBC: Victims of Nazi anatomists named

Although the meaning and origin of the ritual are uncertain, villagers view it as a symbol of Gorjani and a showcase for their children s beauty and elegance.

UNESCO: Culture