an·cil·lary /ˈæn(t)səˌlɛri, ||ænˈsɪləri/
  (a.)補助的,副的
  an·cil·lary =/ˈæn(t)səˌlɛrɪ, <ɪ>ɛsp ɑrɪtɪʃɪ> ænˈsɪlərɪ/= 形容詞
  輔助的,附屬的
  ancillary
  輔助
  An·cil·la·ry a.  Subservient or subordinate, like a handmaid; auxiliary.
     The Convocation of York seems to have been always considered as inferior, and even ancillary, to the greater province.   --Hallam.
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  ancillary
       adj : relating to something that is added but is not essential;
             "an ancillary pump"; "an adjuvant discipline to forms
             of mysticism"; "The mind and emotions are auxilliary to
             each other" [syn: accessory, adjunct, adjuvant, appurtenant,
              auxiliary, subsidiary]