adj.辅助的；附属的
n.助手；辅助设备
The transport corps is ancillary to the infantry. 运输队是步兵的辅助部队。
Practice in the deft use of words may well be ancillary to the study of science. 熟练使用文字的练习对于科学的研究也是有帮助的。
用作名词 (n.)Expensive ancillary equipment was required for the operation to work. 操作这样的系统曾需要昂贵的辅助设备。
