英和和英

intellectual problems

the rootedness of the problem

one's favourite topic

concentrate upon a problem

a worrying problem

Recognize an issue

a mystifying problem

alert to the problems

a problem

the problems involved

remedy a problem

to raise a question―give rise to a controversy

give thought to a problem

unknown problem

the root of the problem

the core of the problem

the core of the problem

an elusive problem

worry at a problem

the guts of a problem

tackle an urgent problem

remediable problems

an involved problem

the bare bones of the matter

an intricate problem

a potential problem

an issue of fact

a matter of fact

to discuss a question

the previous question―a prerequisite