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ineffectual/
.ɪnə'fεkʧυəl
.ɪnɪ'fektjuəl
/
1.adjective
无效果[效力]的,无用的,无益的
2.adjective
无效的，不能产生预期效果的，不奏效的，徒劳无益的，不灵验的
3.adjective
无能力的