supernumerary

基本解释

To our knowledge, this is the first report of supernumerary breast tissue on the foot.
據我們所知，這是第一個被報道在腳底長出副乳組織的案例。
Guterstam and his colleagues then tested the extent to which subjects had adopted this supernumerary limb.
Guterstam說他的同事們接著測試了被試者適應他額外上肢的程度。
The dairy-work lasted only till the milk began to lessen, for she had not met with a second regular engagement as at Talbothays, but had done duty as a supernumerary only.
嬭牛場裡的襍工到嬭量減少的時候就不需要了，因爲她沒有找到和在泰波塞斯嬭牛場一樣的第二份正式工作，所以她衹能做一個編外的臨時工。

But introducing this supernumerary charge has probably added little to America's case.
ECONOMIST: The weakest part of the case for war