用 在組織上的 "冗餘人員"，1928年初用：redundant (1928)
Next year Volvo will do something no other company has tried: it will put 100 fully self-driving cars in the hands of customers. Regular folks in Gothenberg, Sweden and in London will test the systems for the automaker.
The cars will have two independent motors to be sure that at least one of…
ADJECTIVE
1Not or no longer needed or useful; superfluous:an appropriate use for a redundant churchmany of the old skills had become redundant
1.1British No longer in employment because there is no more work available:1928eight permanent staff were made redundant
Origin
Late 16th century (in the sense 'abundant'): from
Latin redundant- 'surging up', from the verb
redundare (see redound).
NOUN (plural redundancies)
[MASS NOUN]
1The state of being not or no longer needed or useful:the redundancy of 19th-century heavy plant machinery
1.1British The state of being no longer in employment because there is no more work available:the factory’s workers face redundancy[COUNT NOUN]: the car giant is expected to announce around 5,000 redundancies
1.2Engineering The inclusion of extra components which are not strictly necessary to functioning, in case of failure in other components:a high degree of redundancy is built into the machinery installation
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