

O ar aqui é muito limpo.
Vamos apanhar ar fresco no parque?
Na cidade, o ar não é bom.
"o ar" is in the lesson "Nature" (Level 38), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.