你认为目前把结构、设备、人员等任何东西送上太空的最大障碍是什么？

What would you say is the biggest obstacle today to putting structures, equipment, people…anything really, into space?

youdao

这是因为他们为制造捕获动物的设备而花费的所有能量——酶、泵等。

This is because of all the energy they expend to make the equipment to catch animals—the enzymes, the pumps, and so on.

youdao

今天的儿童可以免费使用智能手机、笔记本电脑和电视等技术设备。

Children today have free accesses to technological devices, such as smartphones, laptops, and televisions.

youdao

So it's really the upfront cost to move to this, in terms of classroom space and developing pedagogy, and buying us top experiments.

因此搬到这种教室,才是最主要的花费，其中包括教室空间设置,开发教学模式，购买高级实验设备等。

麻省理工公开课 - 媒体、教育、市场课程节选

I'm optimistic about the audio equipment and about our slide material and things such as that.

我对我们的音响设备,和我们的投影材料等都很有信心

耶鲁公开课 - 聆听音乐课程节选