residue /ˈrezɪdjuː/
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基本释义
A residue of something is a small amount that remains after most of it has gone.
n. 残余物
外刊例句
What happens when 900 million metric tons of coal get burned? Roughly 100 million metric tons of coal ash is created, a residue laced with nasty elements like arsenic, lead and mercury. We perform this transformation every year in the U.S.
当9亿吨煤被燃烧时会发生什么？产生了大约1亿吨煤灰，其中含有砷、铅和汞等有害元素。在美国，我们每年都会进行这种转化。
追根溯源
单词residue里的词根sid，来源于拉丁语sedēre, 表示 “坐，停留，休息”。所以，在英语里包含sid的单词，多与此相关：
reside /rɪˈzaɪd/
v. 居住，存在
subside /səbˈsaɪd/
v. 平息，减弱
residual /rɪˈzɪdjuəl/
adj. 残留的，剩余的
resident /ˈrezɪdənt/
n. 居民，住户
residence /ˈrezɪdəns/
n. 住宅，住处
真题例句
Now, researchers have found a surprising ingredient in residue from 5000-year-old beer brewing equipment. While excavating two pits at a site in the central plains of China, scientists discovered pottery fragments from pots, funnels, amphorae, and stoves.
现在，研究人员在有5000年历史的啤酒酿造设备的残留物中发现了一种令人惊讶的成分。在中国中部平原的一个遗址挖掘两个坑时，科学家们发现了陶罐、漏斗、双耳罐和炉子的碎片。
《2017年6月四级真题》
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