他多年钻研古文字,不满足于引用权威,而是反复核对原始材料。Tā duōnián zuānyán gǔ wénzì, bù mǎnzú yú yǐnyòng quánwēi, ér shì fǎnfù héduì yuánshǐ cáiliào.He has studied ancient scripts deeply for years, not content with citing authorities but repeatedly checking original materials.
为了写好论文,她钻研了整整两年的旧档案。Wèile xiě hǎo lùnwén, tā zuānyán le zhěngzhěng liǎng nián de jiù dàng'àn.To write a good paper, she spent a whole two years delving into old archives.
他白天上班,晚上却钻研编程,从不放弃。Tā báitiān shàngbān, wǎnshang què zuānyán biānchéng, cóng bù fàngqì.He works during the day, but in the evenings he studies programming intensively, never giving up.