Jim, is physics difficult to learn?

吉姆，物理难学吗？

youdao

All languages are difficult to learn.

所有的语言都很难学。

youdao

Oh, all languages are difficult to learn.

哦，所有的语言都很难学。

youdao

CPR is not difficult to learn.

VOA: special.2009.08.11

Because there are no articles in the Korean language, so that makes it really difficult to learn them in English.

因为韩语里面没有冠词一说，所以对他们来讲学习英语冠词真的很难。

韩国人经常犯的失误 - SpeakingMax英语口语达人

Other languages don't have that distinction and so those distinctions are very difficult for non-native English speakers to learn.

其他语言并没有这样的差别,所以非英语母语的说话者,很难发现这些差别

耶鲁公开课 - 心理学导论课程节选

But stenography is a steep learning curve and more difficult to learn than Qwerty.

BBC: Why do we all use Qwerty keyboards?

I've never seen Cornish written out and to look down at it on paper, it was difficult to learn.

BBC: Cornwall's Bitter Sweet premiere

It can be expensive and slow to grow, as the language has the reputation of being very difficult to learn.

NPR: Chinese Classes Grow in Popularity with U.S. Students