“嗯，儿子，这就是为什么学习第二语言很重要，”老鼠爸爸回答道。

“Well, son, that's why it's important to learn a second language,” answered Father Mouse.

她的第二语言是法语。

Her second language is French.

许多人在学校里学习第二语言。

Many people learn a second language in school.

学习第二语言有很多好处。

There are many bene to learning a second language.

学习第二语言可以开阔你的视野。

Learning a second language can broaden your horizons.

学习第二语言的优势是很多的。

The advantages of learning a second language are numerous.

说第二语言对你的职业生涯有帮助。

Speaking a second language can help your career.

他正在努力提高他的第二语言技能。

He is working hard to improve his second language skills.

学习第二语言的有用性被广泛认可。

The usefulness of learning a second language is widely recognized.

在当今世界，学习第二语言可以非常有用。

Learning a second language can be very useful in today's world.