supplementary
- adj. 补充的；追加的
- n. 补充者；增补物
考试真题
- with many Asian-American children attending supplementary instructional programs, there is a perception among some white families that the elementary school curriculum is being sped up to accommodate them.
2018年6月四级真题（第一套）阅读 Section B
- Its designers were not high-end with supplementary lines.
出自-2017年6月阅读原文