Colloidal precipitation
[建] 膠體沉淀
?? 詞語組成解析
a. 膠態的, 膠質的\\n[醫] 膠體的, 膠態的, 膠樣的
precipitation
[pr?'s?p?'te??n]
n. 匆促;沉淀;（雨等）降落;某地區降雨等的量;
pre 前綴,表示….前的,預先#詞根助記：pre+cipit頭→ation→落在前頭→降落,下降
??? 情景例句
He was ill at ease with people whom he didn't understand.
他和不熟悉的人在一起感到不自在。
I know the boy whose father is a writer.
我知道那個男孩的父親是作家。
Then sweep the floor.
然后掃掃地。