redundant /rɪˈdʌndənt/ adjective Learner's definition of REDUNDANT
1
: repeating something else and therefore unnecessary累赘的；多余的 -
He edited the paper and removed any redundant information or statements.他对论文进行了编辑，删掉了所有冗余信息或陈述。
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Avoid redundant expressions in your writing.写作中应避免赘述。
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Some people say that since all adages are old, the phrase “old adage” is redundant.有人说既然所有谚语都是古老的，那么短语“古老谚语”就是赘述了。
2
technical —
used to describe part of a machine, system, etc., that has the same function as another part and that exists so that the entire machine, system, etc., will not fail if the main part fails（为预防机器或系统中主要组件故障而设的）复置装置的，冗余的，备用的 3
British : dismissed from a job because you are no longer needed被解雇的；被裁员的