Word: 钻研 (zuānyán) Traditional: 鑽研 钻研 dictionary entry zuānyán to study meticulously; to delve into Full dictionary entry for 钻研 Example sentences using 钻研 2 sentences, showing page 1 of 1. 他整天钻研数学难题。 Tā zhěngtiān zuānyán shùxué nántí. He spends all day studying difficult math problems. 他钻研古代文学多年了。 Tā zuānyán gǔdài wénxué duōnián le. He has been delving into ancient literature for many years.