some time ago,an interesting discovery was made by archaeologists on the Aegean island of Kea.这句话的made怎么解释,
问题描述：
some time ago,an interesting discovery was made by archaeologists on the Aegean island of Kea.这句话的made怎么解释,
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发现
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作出
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an interesting discovery was made by archaeologists = archaeologists（考古学家）made an interesting discovery
原句是被动语态.