adj.輔助的;附屬的
n.助手;輔助設(shè)備
The transport corps is ancillary to the infantry. 運(yùn)輸隊(duì)是步兵的輔助部隊(duì)。
Practice in the deft use of words may well be ancillary to the study of science. 熟練使用文字的練習(xí)對(duì)于科學(xué)的研究也是有幫助的。