从地面上看到空间站其实不是很“困难”--它大概300多英尺长，但是它的移动速度实在是非常的快，（差不多每小时17,000英里）。

The ISS isn’t so hard to see from the ground--it’s well more than 300 feet long these days--but it is moving really, really quickly (like 17, 000 miles per hour quickly).

youdao

很多女性都选择生一个孩子，不只是因为独生子女政策(很容易有漏洞)，更孩子多，非常难管理。

Most of these women seem to stop at one offspring, not only because of the one-child policy (which can be quite leaky) but because any more would be just too difficult to manage.

youdao

这个改变很方便- - -尤其是当你运行多屏幕设置，非常容易丢失鼠标的时候。

This is very handy to have enabled - especially if you run a multi-monitor setup where you can lose the mouse a little too easily.

youdao

And obviously within this long period many many different ideas and perspectives were involved within each side of conflict.

很明显，很久了,非常多的不同的观点和看法,出现在冲突的双方之中。

普林斯顿公开课 - 人性课程节选

We know for sure Greeks and barbarians, and everybody came to Delphi, and when you came to Delphi and you were going to consult the it was hard, there were a lot of people, a long line, so there was a waiting issue.

我们可以肯定希腊人和蛮族人,都去了特尔斐,当人们到了特尔斐时,就会去请示神谕,这事情很难做,因为人非常多,会有很长的队伍,因此等待是个大问题

耶鲁公开课 - 古希腊历史简介课程节选