

Открой окно, здесь совсем спёртый воздух.
Open the window, the air in here is really stuffy.
В автобусе было жарко и спёрто.
It was hot and stuffy on the bus.
От спёртого воздуха у меня разболелась голова.
The stuffy air gave me a headache.
"спёртый" is in the lesson "Hot weather" (Level 15), along with 12 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.