redundant

redundant
adjective
  1. no longer needed or useful; superfluous
    多余的，过剩的
    an appropriate use for a redundant church.
    多余教堂的恰当使用。
    many of the old skills had become redundant.
    许多老技术已变得多余。
    ■(chiefly Brit.)(of a person) no longer in employment because there is no more work available
    (主英)（因劳动力过剩）被解雇的，失业的
    eight permanent staff were made redundant.
    八名正式工被解雇。
    ■(of words) able to be omitted without loss of meaning or function
    （语言）累赘的，冗长的
    ■(Engineering)(of a component) not strictly necessary to functioning but included in case of failure in another component
    (工程)（对运转并非完全必要，仅为预防其他组件故障而设）重复的
派生
redundantly
adverb
语源
  1. late 16th cent. (in the sense 'abundant'): from Latin redundant- 'surging up', from the verb redundare (see redound)
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