英和和英

exploratory reconnaissance

Tackle research

to prospect for gold

do research

do research

to look at something carefully, in order to find out the facts about it

go exploring

an undercover investigation

exploring thoroughly

an application for permission to prospect a mine

perform an experiment

conduct a survey

prosecute an inquiry

make a survey of

undertake an experiment

search thoroughly

probe an anthill

thorough research

inquire into

to investigate

to reconnoitre the enemy―feel the enemy

make a discovery

the pastime of exploring caves

to make an exhaustive study of a subject

close investigation

to search

an intensive investigation

examine thoroughly

prosecute an inquiry

discover traces of