英和和英

make a survey of public opinion

take a poll

conduct a poll

do research

to make a close investigation―a minute investigation

under investigation

a full-dress investigation

make a survey of

matters requiring investigation―matters for investigation

actual investigation―personal investigation

inquiry into one's birth and parentage―inquiry into one's antecedents

an opinion poll

inquire into

to take the census

exact investigation

someone who conducts surveys of public opinion

a narrow examination

exploratory reconnaissance

study in the field

conduct a census

attentive consideration and meditation

a thorough investigation

to probe a matter to the bottom

close investigation

a review of the literature

a comprehensive survey

As a result of inspection...

I'm researching

hold an official inquiry

within the scope of an investigation