书籍 Face2face - 中级 - 单元11 - 11C

working or conducted secretly under the supervision of a law enforcement agency to gather information or catch criminals

someone who works as one of the members of a police force

an individual who illegally and secretly imports or exports goods or people

to hide a small microphone in a place or device in order to secretly listen to or record someone's conversations

a large object created to look like a person or animal from hard materials such as stone, metal, or wood

a large place in which raw materials or produced goods are stored before they are sold or distributed

the act of hiding and waiting in secret to catch someone or something by surprise

to make a formal or friendly request to someone to come somewhere or join something

to present or propose something to someone

to agree with the truth of something, particularly in an unwilling manner

to say or show one's unwillingness to do something that someone has asked

to tell someone that one will do something or that a particular event will happen

to hold the same opinion as another person about something

to mention an idea, proposition, plan, etc. for further consideration or possible action

to make a person remember an obligation, task, etc. so that they do not forget to do it

to tell someone in advance about a possible danger, problem, or unfavorable situation

to say that one is willing to damage something or hurt someone if one's demands are not met