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
Carl, you're sure you've never played?
Carl，你肯定你从来没玩过吗？
Far from it!
还差得远呢！
Refuse politely any cold drink from an unknown source.
应谢绝任何不明来源的冷饮。