Chemical precipitation
[医] 化学沉淀
🧩 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
And tell me where you are and what's happened.
告诉我你在哪里，发生了什么事？
When the wolf grows old, the crows ride him.
狼老被鸦欺。
The train arrived on time.
火车准时到达。