Lucy teaches English as a second language.

露西教作为第二语言的英语。

Students are expected to master a second language.

学生们应该掌握一门第二语言。

It is worth mastering a second language in modern society.

在现代社会，掌握第二语言是值得的。

Learning English as a second language can be a painful experience.

将英语作为第二语言来学习可能是一段痛苦的经历。

Being devoted to learning a second language, whether you are old or young, will add to a lot of fun and broaden your horizon.

无论年龄大小，努力学习第二门语言都会给你带来很多乐趣并开阔你的视野。