Explosions can be challenging for similar reasons.

出于同样的原因，爆炸也具有挑战性。

Moving is stressful. It can be a big challenge.

搬家是一件压力很大的事情， 也会是一大挑战。

And there's two things that can be challenging there.

而在这其中有两点很难。

This can be a real challenge for many English learners.

这对许多英语学习者来说的确是个挑战。

For some mountain dwellers, just finding food can be a challenge.

对于一些山区的居民，寻找食物甚至成为挑战。

It's just that figuring out what caused something can be a challenge.

只是弄清楚是什么导致了某种疾病是一项挑战。

At angles of up to 25 degrees, even standing up can be a challenge.

在25度的角度倾斜状态下，就连站立也是一项挑战。

That's good news! Sometimes the tests can be a real challenge for people.

这真是好消息！驾驶考试对有些人可以是很大的挑战。

But, when you work from home, it can be challenging to keep a healthy balance.

但是，当你在家工作时，保持健康的平衡可能是一个挑战。

However, speaking can be a challenge, especially when you're communicating in a second language.

然而，说话可能是一个挑战，尤其是当你用第二语言交流时。

They can be challenged or reversed in court and the next president could let them go.

但法庭上该提案将会面临挑战或被逆转, 而且下一任总统可能会让其失效。

Yeah, this sounds simple, but if you're not familiar with meditation it can be a unique challenge.

是的，这听起来很简单，但如果你不熟悉冥想，这可能是个不寻常的挑战。

Work can be challenging for lots of reasons; deadlines to meet, bugs to fix, profit margins to hit.

由于许多原因，工作可能是具有挑战性的；要在最后期限前完成，要修复错误，要达到利润率。

The difficulty is it can be challenging for people with narcissistic personality disorder to keep working at self-betterment.

难就难在，有自恋人格障碍的人难以不断地 自我努力和自我完善。

Science is complex, and conveying that complexity in a few minutes while cracking jokes can be a challenge.

科学是复杂的，在开玩笑的几分钟内灌输这种复杂性可能会是一个大挑战。

It can be challenging to be a female scientist, but not to the extent that anyone should be stopped.

成为一名女科学家可能具有挑战性，但不会达到阻止任何人的程度。

But, for those without one, even applying can be a challenge. Take Faine's online interview for her apprenticeship.

但是，对于那些没有学历的人来说，即便申请了可能也会是一个挑战。以芬恩的学徒在线面试为例。

But they're far less powerful than congressional laws because they can be challenged in court and canceled by future presidents.

但它们的效力远不如国会法律，因为它们可以在法庭上受到质疑，并被未来的总统取消。

Because breast tissue changes shape as the ultrasound scanner moves over it, researchers say locating the tumor can be a challenge.

由于胸部的组织会在受到超声波扫描仪照射时改变形状，所以研究人员认为定位肿瘤的位置会是一项挑战。

It can be challenging for some use.

对于某些用途来说 它可能具有挑战性。