Radioactive precipitation analysis
[化] 放射性沉淀法
🧩 词语组成解析
precipitation
[prɪ'sɪpə'teʃən]
n. 匆促;沉淀;（雨等）降落;某地区降雨等的量;
pre 前缀,表示….前的,预先#词根助记：pre+cipit头→ation→落在前头→降落,下降
🗣️ 情景例句
Who has torn these pages out of the book?
谁撕掉书上的这几页？
He will be too afraid to do anything.
他害怕得什么都不能做了。
In Gambia, as in most parts of Africa, there are few written records of family histoy.
冈比亚同非洲多数地方一样，有关家族的书面记载为数极少。