sac·ri·fi·cial /ˌsækrəˈfɪʃəl/
(a.)犧牲的,獻祭的,具有犧牲性的
Sac·ri·fi·cial a. Of or pertaining to sacrifice or sacrifices; consisting in sacrifice; performing sacrifice. “Sacrificial rites.”
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sacrificial
adj : used in or connected with a sacrifice; "sacrificial lamb"