Yizkor (" remembrance ") prayers are recited by those that have lost either one or both of their parents.
“纪念祷告”是纪念失去的一个或者双亲。
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There is a custom that those who do not recite the Yizkor prayers leave the synagogue until the completion of Yizkor; the symbolic reason for this is to respect the life of one's living parents.