de-
prefix uk/diː-/ /dɪ-/ us/diː-/ /dɪ-/
（用于名词或动词前）表示“相反”、“除去”或“减少”
used to add the meaning "opposite", "remove", or "reduce" to a noun or verb
deforestation 砍伐森林
the denationalization of the coal industry 煤炭行业的非国有化
Once you've written a computer program, you have to debug (= remove the errors from) it. 编写完计算机程序后，必须要经测试改正其中的错误。