For some inane reason, Facebook still uses Bing as its default translater. When someone, in my case typically a former student, writes something in a foreign (by which I mean non-English) language, I am given the option to click on "translate" and Facebook gives me a truly horrid, unintelligible Bing translation. Most of the time I have no idea what the translation means, and most of the time I am too lazy to copy and paste the posting into a Google translater.
One thing about Google is that the programmers use adaptive techniques. They are constantly improving their search engine and their translater. So when you put something from a non-English language into their translater, you get a reasonable translation from Google. Google constantly improves itself, which is why it has been so successful.
Bing, however, seems to have a zero or really bad adaptive mechanism. The translations Bing offers are just as bad today as they were a year or two ago. They do not seem to care that the translations make no sense and are of no value to Facebook readers.
I'm surprised that Bing hasn't gotten better. I'm at least as surprised that Facebook hasn't dumped Bing for the Google translator.