Ddec
abbr. decoppering 去铜
🗣️ 情景例句
What was your graduation thesis on?
你毕业论文是什么题目？
A book that remains shut is but a block.
有书闭卷不阅读，无异是一块木头。
recorded for the slumbering scientist the strength of a shock that was too weak to waken him,and the direction from which it came.
由于地震太弱而未惊醒科学家时，就为科学家记录下了地震的强度和地震方向。