如果你不希望他们走神，那么别用让页面上的东西会闪，也别让视频自动播放。

If you don't want them to be distracted, don't flash things on the page or start videos playing.

youdao

因此在这种情况中，实际上页面上没有可视的东西，并且不是图像！

So in this case, there's actually nothing on the page that's viewable and isn't an image!

youdao

根据80/20原则：页面上20%的东西要传递80%的价值信息。

Follow the 80/20 rule: 20% of what’s on the page delivers 80% of the value.

youdao

Things are moving and changing ; without the whole page reloading; when we looked towards the end of the semester Ajax enabled websites much like the ones we all use today.

不用重新更换页面,因为页面上的东西一直在变化;,在学期即将结束时我们会学习如何实现这些动态的东西,还有Ajax对于浏览器兼容性的贡献。

哈佛公开课 - 计算机科学课程节选