你们在生活中遇到的挑战，他们也都遇到过。

They face challenges in their lives just like you do.

youdao

问：各国在执行这些标准时遇到的挑战是什么？

Q: What are the challenges countries face in implementing the standards?

youdao

这样你会很容易了解到他们的任务和遇到的挑战。

Understanding their tasks and challenges will be easier that way.

youdao

What are some of the particular opportunities and challenges of being a Muslim chaplain in America on a secular university campus?

美国大学中的穆斯林教士,一般都会遇到一些,什么样的机会和挑战呢？

普林斯顿公开课 - 人性课程节选

We're going to really get into this next class, but I just want to introduce it to you to give us a start, and many of you have used Lewis structures in high school, but we'll be doing some much more challenging Lewis structures, I can assure you, in this class here.

其实我们下节课才会详细介绍它，但是今天我只想以简单介绍作为开始，大部分同学在高中就用过路易斯结构了，但是我们会遇到一些更具挑战性的,路易斯结构，我可以向大家保证，在这门课中会的。

麻省理工公开课 - 化学原理课程节选

So that was a more recent one.

上面所说的是近年来遇到的挑战。

普林斯顿公开课 - 人性课程节选