Join the yours language team, or if there is no one - request it.
If the sentence breaks into parts, you see nearby parts. For example:
COM_ZHGOOGLEMAP_MAP_ELEVATION1="The elevation at this point"
It produces text: The elevation at this point is <...> meters
Thanks in advance.
PS: I'll add your info into thanks section of component (about tab), and if you want I can write your site (if you provide)
Today there is no multilanguage support for placemark content. In your case you should create different placemarks with content for different maps (for language), or use some plugins (system plugins) to create translation on the fly