challenging
例子
Climbing the steep mountain trail was challenging, testing the hiker's endurance and determination.
攀登陡峭的山路很有挑战性，考验了徒步者的耐力和决心。
例子
The film presented a challenging perspective on modern society.
这部电影提出了一个关于现代社会的发人深省的观点。
词汇树
unchallenging
challenging
challenge
