Sami improved his Arabic vocabulary.
- Sami Arapça kelime bilgisini geliştirdi.
The hardest part of learning a language is knowing the vocabulary by heart.
- Dil öğrenmenin en zor kısmı kelime bilgisini ezberlemektir.
The vocabulary of any language is influenced by contacts with other cultures.
The vocabulary of social sciences is often incomprehensible to ordinary people.
My Russian vocabulary is very limited.