On 05/11/19 12:44, Coly Li wrote: >>> are devices number before and after the grow operation, "* 2" comes >> > >> > device numbers > Copied. I am not sure whether it should be "device numbers" or maybe > "devices numbers", this confuses me *^_^* > It is "device numbers". The trick for English is to ask yourself what is the singular form. Here it is "device number". Then convert that to plural by adding an "s" at the end. English never "doubles up" as far as I'm aware (and I bet someone comes up with an obscure example where it does :-) I'm trying to think of a good example of the differences between languages. I know in Russian you have to negate everything so to make a sentence negative you might have several negating words in there. In English two negatives make an emphatic positive (though I've thought of a nice exception here!) (My exception? "never", and "not ever" are the same. "not never" should mean the same as "ever" or "always" but colloquially often doesn't. But "no never" is an emphatic "never", because actually "no" doesn't negate the never, but is a negative word itself. English is tricky :-) Cheers, Wol