They have difficulty with their own language, let alone someone else's.

他们说自己的语言都有困难，更不要说其他人的语言了。

youdao

From using your language skills to do translations, to developing and managing projects and helping with IT work, there is so much that so many people can do to help people in their own countries and across the world.

从使用你的语言技能做翻译，到开发和管理项目和帮助 IT 工作，有很多人可以帮助他们自己的国家和世界各地的人。

youdao

In schools, the language of the branch with the majority of students dominates the conversation, yet students from the same branch prefer their own language.

在学校里，哪个支系的学生多就使用哪种语言，但同一支系的学生相互交谈又使用本支系的语言。

youdao

They have a language of their own. Some of the words and expressions deal with the special areas of their work.

VOA: special.2010.07.25

As a result, about half of the Kazakhs, who make up about half of the total population, are unfamiliar with their own language or can manage only conversational Kazakh.

ECONOMIST: Kazakhstan

Each time I see the smiles on the faces of children who have just stepped into their first library, one filled with colorful stories in their own language, I am reminded of why I took that leap of faith years ago and ventured away from the corporate world.

FORBES: Magazine Article

She has family members who live nearby, but says she's found a way to communicate with them in their own language through Facebook.

CNN: All in the Facebook family: older generations join social networks