1PREFIX (加在动词之前)表示“否定”,“相反”De- is added to a verb in order to change the meaning of the verb to its opposite. (加在动词之前)表示“否定”,“相反”
...becoming desensitized to the harmful consequences of violence.
对暴力的有害影响变得麻木
...how to decontaminate industrial waste sites.
如何清除工业垃圾场的污染
2PREFIX (加在名词之前构成动词)表示“除去”,“除掉”De- is added to a noun in order to make it a verb referring to the removal of the thing described by the noun. (加在名词之前构成动词)表示“除去”,“除掉”
I've defrosted the freezer.
我已经给冷冻柜除过霜了。
The fires are likely to permanently deforest the land.