I realized I had to surmount the language barrier.

我认识到我必须得克服语言障碍。

《柯林斯英汉双解大词典》

Kids were having a hard time in school just because of the language barrier.

因为语言障碍，孩子们在学校过得很艰难。

youdao

Indeed, the language barrier can be a big factor affecting understanding.

事实上，语言障碍可以是影响理解的重要因素。

youdao

Making this life change is hard on all fishermen, but for the Vietnamese and Cambodians here, the language barrier is an added obstacle in trying to reach out to BP for work and compensation.

VOA: standard.2010.05.15

And kids were having a hard time in school just because of the language barrier.

在校的儿童们遇到的困难主要来自于语言沟通障碍。

帮助多文化的家庭 - SpeakingMax英语口语达人

But with threats, a language barrier and fear of the legal system, victims are often unwilling or unable to seek help.

VOA: special.2010.06.14

The number one hurdle to overcome when travelling around China is the language barrier.

CNN: 5 top tips for China first-timers

The language barrier is also an issue, though many Europeans do speak multiple languages.

FORBES: The Big Four Global Economies

Even if a band can overcome the cultural hurdles, he said, the language barrier is often prohibitive.

WSJ: A Russian Band Looks for a Home Abroad