investigation into sth
an official examination of the facts about a situation, crime, etc.
(正式的)调查,侦查
a criminal / murder / police investigation
刑事/凶案/警方调查
The police have completed their investigations into the accident.
警察已完成对这次事故的调查。
She is still under investigation.
她仍在接受调查。
erect
to put sth in position and make it stand vertical
竖立;搭起
同义词:put sth up
Police had to erect barriers to keep crowds back.
警察得设立路障来阻截人群。
to erect a tent
搭帐篷
substitute
substitute for sb
substitute for sth
a person or thing that you use or have instead of the one you normally use or have
代替者;代替物;代用品
a meat substitute
肉食替代品
Paul's father only saw him as a substitute for his dead brother.
保罗的父亲只是把他当作他死去的哥哥来看待。
a substitute family
收养家庭
The course teaches you the theory but there's no substitute for practical experience.
这门课教的是理论,但没有任何东西能代替实践经验。