I sometimes wear contact lenses.

我有时候戴隐形眼镜。

The contact lenses you use today are very different from those used 30 years ago.

你们现在使用的隐形眼镜，与三十年前使用的，已经有天壤之别。

If you like, you can even change the color of your eyes with colored contact lenses.

如果你愿意，你甚至可以利用有色隐形眼镜来改变你眼睛的颜色。

Here they are.Your contact lenses.

在这里！你的隐形眼镜。

I don't have my contact lenses in.

我没带隐形眼镜。