Because a microphone is not the same thing, a microphone uses electrical/electronic impulses to power separate speakers which project the sound, a bullhorn or megaphone uses sounds input by the human voice at the rear of the device to vibrate membranes within the middle, these then reproduce the sounds which are then amplified by the horn shape at the front. .... Thus, unlike the microphone all the sound input, amplification and output take place within a single horn shaped device.
Any time, you are most welcome.
There is no such thing as an idiotic question if it is genuine as opposed to these stupid trolls and you are certainly no troll. Just remember the only difficult question is the one you don't know the answer to but conversely any question however complex is easy if you do know the answer. ....... Besides, nobody learned anything without asking questions. :-))
Actually, though questions are important, things can be learned without asking them. And a question could be idiotic, that is, possess the qualities of an idiot or idiocy, and still be a legitamate question, though it is still usually a good idea to ask it at that point. Furthermore, what some people say is idiotic is really just ignorant, which is a whole separate issue. That, however, is not to comment on this question in particular, but just in general.
So, basically, semantics.
One might also add that 'μπ' and 'ντ' are often used to represent the 'b' and 'd' sounds in loan words, for example αβοκάντο for 'avocado'. In this case the 'ν' is usually not pronounced (this is the general rule, but you do find some people who will pronounce αβοκάντο as 'avoKANdo' etc.). If the word in question is a proper Greek word (as in αντωνυμία) then the 'ν' is pronounced and the following 'π' or 'τ' softened to 'b' and 'd' respectively (as far as I know they are thought to not have been softened in Ancient Greek).
That's what the drop down hints are for. Under the word, you'll see small gray dots. Pass your cursor over the word and the answers will drop down. There may be more than one but it's best to use the top one.
If you are on the web you can also take advantage of the Tips & notes. On the first page of each lesson, you'll see a small light bulb. Click on it and you'll get info on that lesson.
If you have any questions let us know. Do you have the Greek keyboard?
How to get the Greek keyboard how to add accents etc. https://www.duolingo.com/comment/22040507
These links will not only show you how to get the Greek keyboard but also how to find the Greek letters on it, how to add accents etc.
THE GREEK ALPHABET https://www.duolingo.com/comment/22424028
And here is another to help you navigate Duolingo
FAQ - General Questions, Bugs & Reports https://www.duolingo.com/comment/23799672
Some simple hints to get you started:
Always read the comments before posting.
Read the Tips & notes on the first page of each lesson. Look for the image of a lightbulb.
Read the drop down hints. Pass your cursor over a word and a list of words will appear. The top word is the best.
These are the official Duolingo guidelines which you should read. https://www.duolingo.com/guidelines And these will answer lots of questions about how Duo works. https://www.duolingo.com/comment/8000024
If you have questions just ask.
Why would you use Google Translate or any other dictionary if you can find the exact translation for each word in the Drop Down hints?
Yes, there are plenty of other words using "ντ" but this one shows that the pronunciation is used at the start and in the middle of a word...something that is not the case for all double consonants.