Examples of using "Feilen" in a sentence and their english translations:
You have to polish your English.
I'll have time to file my nails while you're dressing.
So if you ask a friend if they liked the food you prepared for them, and they say it’s “not terrible,” in English, that would mean it’s not so bad. But if a French friend says that it was pas terrible, then you know you better improve your cooking skills.