

Защищать страну — обязанность каждого солдата.
Defending the country is the duty of every soldier.
У дежурного сегодня много обязанностей.
The person on duty has a lot of responsibilities today.
Ты хорошо знаешь свои обязанности?
Do you know your duties well?
"обязанность" is in the lesson "Military" (Level 31), along with 13 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.