Can I install additional languages on Android?

> **Possible Duplicate:** > [How do I add a new language?](https://android.stackexchange.com/questions/15361/how-do-i-add-a-new-language) I bought my HTC Sensation abroad, and I can only choose system languages from the Asian region (English for different regions, as well as Chinese and Thai). I'd like to set the system language to Spanish, but it's not on the list. Is there a way I can install additional languages to the system? My phone is an HTC Sensation, recently upgraded to Android 4.0.5.