登堂入室dēng táng rù shìbecome a real expert(/specialist); gain (/obtain) the mastery of; pass through the hall into the inner chamber—reach a higher level in one’s studies or become more proficient in one’s profession
❍ 那位著名诗人从小学诗，几年后便～了。That well-known poet learned to compose poems when he was very young. Several years later he obtained the mastery of poetry-writing. 登堂入室dēnɡ tánɡ rù shì堂：厅堂，古代宫室的前屋；室：宫室的后屋。登上厅堂，进入内室。比喻学问或技艺达到高深的程度。gain the mastery of, pass through the hall into the inner chamber, obtain the mastery of |