proficient是什么意思
proficient [英][prəˈfɪʃnt][美][prəˈfɪʃənt] adj.精通的，熟练的; n.能手，老手，专家; 复数：proficients 例句: 1. Proficient means students have a solid understanding of the material. 熟练意味着学生对材料有扎实的理解。 2. Becoming proficient with the latest technologyis key to staying...