adj.单语的，只用一种语言的
n.只懂一种语言的人

She is monolingual, speaking only English.
她只会说英语，是个单语者。
In Japan, the vast majority of the population is monolingual in Japanese.
在日本，绝大多数人口只会说日语。
Despite living in Spain for 5 years, he remains stubbornly monolingual in English.
尽管在西班牙生活了五年，但他仍然坚持只使用英语。
The study was conducted with a monolingual group of native English speakers.
这项研究是在一群以英语为母语的单语者中进行的。
Monolingual dictionaries are often preferred by language learners for their focus on one language.
单语词典因其专注于一种语言而常常受到语言学习者的青睐。
In a multicultural city like Toronto, it's rare to find someone who is completely monolingual.
在多伦多这样的多元文化城市里，完全只会一种语言的人很少见。
Being monolingual can limit job opportunities in today's globalized world.
在当今全球化的世界里，只会一种语言可能会限制就业机会。
They raised their children to be monolingual in Mandarin, as they believed it would help them connect better with their Chinese roots.
他们让孩子从小只会说普通话，因为他们认为这样能更好地帮助孩子与他们的中国根源建立联系。
The company policy requires all employees to be at least bilingual, so being monolingual disqualifies her from the position.
公司政策要求所有员工至少会两种语言，因此只会一种语言使她无法胜任这个职位。
He's decided to break free from his monolingual comfort zone and learn a second language.
他决定跳出自己只会一种语言的舒适区，去学习第二门语言。