Usage note
掌握的意思是学会并能够熟练运用。比如,你可以掌握一门语言或一项技能。
Zhǎngwò de yìsi shì xuéhuì bìng nénggòu shúliàn yùnyòng. Bǐrú, nǐ kěyǐ zhǎngwò yī mén yǔyán huò yī xiàng jìnéng.
Master means to learn and be able to use skillfully. For example, you can master a language or a skill.