难题

The quality of being logical; the state of being characterized by sound reasoning and clear connections between ideas.

A formal disagreement or objection to a proposal, decision, or opinion.

Having or showing great knowledge or learning; erudite. It describes someone who has studied extensively across various fields.

Everyone expresses their own opinions or views freely. It is a common term used to describe discussions, seminars, or collaborative environments.

Admittedly; no doubt; it is true that. Used to acknowledge a fact before introducing a contrasting or more important point.

Inherent; intrinsic; something that belongs to the nature of a thing or person from the beginning.

Ultimately; in the final analysis. Used to point out the most fundamental reason or essence of a matter after considering all factors.

To conclude, judge, or assert something firmly based on evidence or reasoning.

To try or attempt to do something. It often implies a deliberate effort to achieve a goal, sometimes with uncertainty about the result.

To record or document something in writing or on other media; a written record of events.