改变会是件很难的事。

Change can be a difficult thing.

youdao

相比之下，在这里你觉得谋生是一件很难的事。

Here, by contrast, you get the feeling that it's a pretty tough way to make a living.

youdao

面对展现如此痛苦的孩子，不想去安慰是件很难的事。

It is hard not to want to comfort a child who shows such agony.

youdao

I'll bet even all of you can remember songs that you have known all your life, but not other things.

我打赌你们很容易就能想起你们曾经,听到的歌曲,但别的事就很难

耶鲁公开课 - 古希腊历史简介课程节选

It's a difficult thing to do these things and that's why we need invention.

做这些事很难,这正是我们需要发明的原因。

耶鲁公开课 - 金融市场课程节选