Contamination precipitation
[建] 杂质的沉积
🧩 词语组成解析
contamination
[kənˌtæmi'neiʃən]
n. 污染;弄脏;毒害;玷污;
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
you can help me with dinner.
你就来帮我准备晚餐。
We invited two guests to dinner,but they didn't come.
我们邀请了2个客人去吃晚饭，但是他们没来。
At what time can we work out a deal?
我们什么时候洽谈生意？