词汇网络: 도전적이다

The act of achieving or accomplishing a goal or task through effort.

The point, edge, or line beyond which something cannot or may not proceed; a limitation or boundary.

Passion; strong enthusiasm or desire for something.

To challenge; to invite someone to engage in a contest or undertake a demanding task.

A target or specific result that one intends to achieve.

A call to take part in a contest or competition, or a difficult task that tests someone's ability. In academic contexts, it often refers to social or scientific hurdles that require significant effort to overcome.