3.  scour v. 彻底搜索

英释

go through

句子新概念作文一等奖

The house has been searched / scoured for the hidden bullion.

近义表达

scour / search / hunt  (都可与for 搭配,表示目的)

search  指寻找丢失的东西或被认为是存在的东西，比look for更正式

hunt    指漫无边际的寻找急需要的东西

scour   表示彻底地搜查一个特定范围并暗示花费更大的力气

     Eg.: I have been searching everywhere, but I can't find the key.

We spent a week hunting for the puma.

   They scoured the woods for the child.

ransack sth for sb/sth遍搜

They're ransacked the house for those papers ,but they can't find them.

comb  (through)sth for sb/sth

Police are combing the woods for those papers, but they can't find them.