"The wind is cold today."
Translation:Anuanu ka makani i kēia lā.
He anuanu is not incorrect. "He" with an adjective tends to describe a more basic or permanent description (status) of the adjective, while "ua" (ua anuanu) tends to describe a more temporary description. But these are nuances that DL is probably not interested in pursuing at this level, so it will likely never be identified as "another correct answer."
Another example: "He uʻi kou makuahine" (your mother is beautiful, because she's just a beautiful woman) or "Ua uʻi kou makuahine i kēia lā" (your mother is beautiful today, because she's all dressed up for the party).
So using "he" with anuanu for the wind today seems a little strange; "ua" would probably be more realistic, but generally unnecessary. Make sense?
Ugh! I keep forgetting that Hawaiian doesn't have a verb for "to be" or a copula!
If you're looking for a verb in the sentence, don't overlook "anuanu" (the feeling of being cold), which is often described as an "`a`ano", or "stative verb".
I personally find the sentence easier to digest if I think of it as
stative-Verb (anuanu) + Subject (ka makani) + phrasal-Adverb-of-time (i kēia lā).
"Ka makani anuanu" would mean "The cold wind". If you put an adjective before the noun, it functions as though there was the verb "to be" before adjective (this is how i understand it, if i'm not being clear I'm sorry), therefore "Anuanu ka makani" would mean "the wind is cold" or as I try to help myself remember the word order while learning: "(is) cold the wind".
Compared to the Spanish and German courses I find this Hawaiian course is not as developed in terms of learning progression and even some audio aspects to the app. I assume it is because it is so new and just getting started and the fact that unfortunately language instruction for Hawaiian has not had the years of study that these European languages have had. I am grateful that we have what we have! I wish and hope the Duo message that it learns from it students and then improves the course will kick in here.