How the word "apertar" is translated into English
Tens de apertar o cinto de segurança.
Não consigo apertar estas calças.
Vou apertar os sapatos e já vou.
"apertar" is in the lesson "Verbs 18" (Level 30), 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.
