钻研

Traditional form:

鑽研

Pinyin (reading):

zuānyán

Definitions:

• to study meticulously
• to delve into

Characters:

• 钻 - diamond; to bore, to drill, to pierce
• 研 - to grind, to rub; to study, to research

Traditional characters:

• 鑽 - diamond; to bore, to drill, to pierce
• 研 - to grind, to rub; to study, to research