1. to make one's abilities or competencies better or more proficient through practice, training, or experience
She decided to improve her skills by taking online courses.
Ela decidiu melhorar suas habilidades fazendo cursos online.
2. to enhance one's expertise or proficiency in a particular area
Athletes improve their skills through consistent training and dedication.
Atletas melhoram suas habilidades através de treinamento consistente e dedicação.