expert; specialist

specialty; specialized field; main field of study (at university); major; CL:門|门[men2],個|个[ge4]; professional

specialized; dedicated (to a particular field or purpose); specially; specifically (for a particular purpose); (of institutions, personnel etc) designated or assigned for a specific task; special

to focus one's attention; to concentrate on (doing sth)

to focus; to concentrate; to give one's full attention

vocational secondary school; technical secondary school (abbr. for 中等專業學校|中等专业学校[zhong1 deng3 zhuan1 ye4 xue2 xiao4])

three-year college; junior college; professional training college

(Internet slang) masterpiece music album; classic album (abbr. for 神級專輯|神级专辑[shen2 ji2 zhuan1 ji2])

with undivided attention

to act arbitrarily; to act for oneself