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If you wrap some text on your page with a class of "notranslate" you can force their translation engine to skip it and display it literally:
You can also do it for an entire page by using "notranslate" in the meta but that would be unusual.
Let's see if other translation engines follow.
ps. What ever happened to Google's project to use United Nations documents to improve the translation engine? Did they follow through or not?
Makes you wonder what else they're doing with CSS files. Time to rename class="bold" to class="xyz"? ;)
Maybe using comment tags to mark content blocks (as with the AdSense program) would be more appropriate so as to stay closer within web standards.