Translation of "Bilingual" in Chinese

I'm going to buy the bilingual dictionary next Saturday.

我下周六买双语词典。

Am I seriously the only one who isn't bilingual here?

严肃的讲在这里只有我一个人不会双语的吗？

Being at least bilingual is a must in today's world.

在当今的世界，拥有双语种是必要的

Nowadays, some kindergartens are carrying out bilingual teaching, and so all the children can speak a little English.

现在有些幼儿园推行的是双语教学，小朋友们都能滴里嘟噜地说上几句英语。