it is still challenging to get insurance for family members
为家庭成员购买保险仍然具有挑战性
Some Congress members are trying to block the plan, and at least a dozen industry groups, four states, and three environmental groups are challenging it in federal court.
一些国会议员正试图阻止该计划，至少有十几个行业团体、四个州和三个环保组织正在联邦法院对该计划提出挑战。
Sit down to read and the flywheel of work-related thoughts keeps spinning – or else you’re so exhausted that a challenging book’s the last thing you need.
坐下来看书时，与工作相关的想法飞轮仍在不停地转动——或者你实在太疲惫了，这时候读一本有挑战性的书恰恰是你最不需要的。
what challenging books demand is repetitive reading
有挑战性的书籍所要求的是重复阅读
He thinks his job as a technician quite challenging.
他认为作为技术人员的工作相当有挑战性。
例句取自历年考研英语真题，翻译为机器生成，仅供学习参考。