It's challenging

挑战性───challenging;有───yes

There's no doubt that these are challenging times.───毫无疑问,目前经济环境对我们挑战极大.

Weber is challenging his audience to question their own beliefs.───韦伯正要求观众们反思质疑各自的信仰。

Mike found a challenging job as a computer programmer.───迈克找到了一份富有挑战性的工作——当电脑程序师。

You can manipulate boredom in a way that can get them to do something challenging.───某种程度上你可以运用无聊，使孩子们做一些具挑战性的事情.

Although automatic text translators are now reasonably effective, voice recognition has proved more challenging.───尽管自动文本语言翻译目前相当有效, 语音识别还是十分具有挑战性的.

Building a home from scratch can be both exciting and challenging.───建立一个全新的家庭既让人兴奋又富于挑战。

The new play poses some challenging questions.───这出新戏提出了一些富有挑战性的问题.

a challenging and rewarding career as a teacher───富有挑战性且有意义的教师职业

The newspaper was directly challenging the government's legitimacy.